diff --git a/core/src/ancestor_hashes_service.rs b/core/src/ancestor_hashes_service.rs
index 058d6b085..ed722ea0a 100644
--- a/core/src/ancestor_hashes_service.rs
+++ b/core/src/ancestor_hashes_service.rs
@@ -6,6 +6,7 @@ use crate::{
     result::{Error, Result},
     serve_repair::AncestorHashesRepairType,
 };
+use crossbeam_channel::{Receiver, Sender};
 use dashmap::{mapref::entry::Entry::Occupied, DashMap};
 use solana_ledger::{blockstore::Blockstore, shred::SIZE_OF_NONCE};
 use solana_measure::measure::Measure;
@@ -29,7 +30,16 @@ use std::{
     time::{Duration, Instant},
 };
 
+#[derive(Debug, PartialEq)]
+pub enum AncestorHashesReplayUpdate {
+    Dead(Slot),
+    DeadDuplicateConfirmed(Slot),
+}
+
 pub const MAX_ANCESTOR_HASHES_SLOT_REQUESTS_PER_SECOND: usize = 2;
+
+pub type AncestorHashesReplayUpdateSender = Sender<AncestorHashesReplayUpdate>;
+pub type AncestorHashesReplayUpdateReceiver = Receiver<AncestorHashesReplayUpdate>;
 type OutstandingAncestorHashesRepairs = OutstandingRequests<AncestorHashesRepairType>;
 
 #[derive(Default)]
@@ -114,6 +124,7 @@ impl AncestorHashesService {
         blockstore: Arc<Blockstore>,
         ancestor_hashes_request_socket: Arc<UdpSocket>,
         repair_info: RepairInfo,
+        _ancestor_hashes_replay_update_receiver: AncestorHashesReplayUpdateReceiver,
     ) -> Self {
         let outstanding_requests: Arc<RwLock<OutstandingAncestorHashesRepairs>> =
             Arc::new(RwLock::new(OutstandingAncestorHashesRepairs::default()));
diff --git a/core/src/cluster_slot_state_verifier.rs b/core/src/cluster_slot_state_verifier.rs
index 3ba172bd0..422a37b48 100644
--- a/core/src/cluster_slot_state_verifier.rs
+++ b/core/src/cluster_slot_state_verifier.rs
@@ -1,4 +1,8 @@
-use crate::{fork_choice::ForkChoice, heaviest_subtree_fork_choice::HeaviestSubtreeForkChoice};
+use crate::{
+    ancestor_hashes_service::{AncestorHashesReplayUpdate, AncestorHashesReplayUpdateSender},
+    fork_choice::ForkChoice,
+    heaviest_subtree_fork_choice::HeaviestSubtreeForkChoice,
+};
 use solana_ledger::blockstore::Blockstore;
 use solana_sdk::{clock::Slot, hash::Hash};
 use std::collections::{BTreeMap, BTreeSet, HashSet};
@@ -220,6 +224,7 @@ pub enum ResultingStateChange {
     RepairDuplicateConfirmedVersion(Hash),
     // Hash of our current frozen version of the slot
     DuplicateConfirmedSlotMatchesCluster(Hash),
+    SendAncestorHashesReplayUpdate(AncestorHashesReplayUpdate),
 }
 
 impl SlotStateUpdate {
@@ -294,6 +299,9 @@ fn on_dead_slot(slot: Slot, dead_state: DeadState) -> Vec<ResultingStateChange>
         // check if our version agrees with the cluster,
         let bank_hash = Hash::default();
         let is_dead = true;
+        state_changes.push(ResultingStateChange::SendAncestorHashesReplayUpdate(
+            AncestorHashesReplayUpdate::DeadDuplicateConfirmed(slot),
+        ));
         check_duplicate_confirmed_hash_against_frozen_hash(
             &mut state_changes,
             slot,
@@ -301,8 +309,13 @@ fn on_dead_slot(slot: Slot, dead_state: DeadState) -> Vec<ResultingStateChange>
             bank_hash,
             is_dead,
         );
-    } else if is_slot_duplicate {
-        state_changes.push(ResultingStateChange::MarkSlotDuplicate(Hash::default()));
+    } else {
+        state_changes.push(ResultingStateChange::SendAncestorHashesReplayUpdate(
+            AncestorHashesReplayUpdate::Dead(slot),
+        ));
+        if is_slot_duplicate {
+            state_changes.push(ResultingStateChange::MarkSlotDuplicate(Hash::default()));
+        }
     }
 
     state_changes
@@ -351,9 +364,14 @@ fn on_duplicate_confirmed(
     }
 
     let bank_hash = bank_status.bank_hash().expect("bank hash must exist");
-    let is_dead = bank_status.is_dead();
 
     let mut state_changes = vec![];
+    let is_dead = bank_status.is_dead();
+    if is_dead {
+        state_changes.push(ResultingStateChange::SendAncestorHashesReplayUpdate(
+            AncestorHashesReplayUpdate::DeadDuplicateConfirmed(slot),
+        ));
+    }
     check_duplicate_confirmed_hash_against_frozen_hash(
         &mut state_changes,
         slot,
@@ -460,6 +478,7 @@ fn apply_state_changes(
     fork_choice: &mut HeaviestSubtreeForkChoice,
     duplicate_slots_to_repair: &mut DuplicateSlotsToRepair,
     blockstore: &Blockstore,
+    ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     state_changes: Vec<ResultingStateChange>,
 ) {
     // Handle cases where the bank is frozen, but not duplicate confirmed
@@ -494,6 +513,9 @@ fn apply_state_changes(
                     )
                     .unwrap();
             }
+            ResultingStateChange::SendAncestorHashesReplayUpdate(ancestor_hashes_replay_update) => {
+                let _ = ancestor_hashes_replay_update_sender.send(ancestor_hashes_replay_update);
+            }
         }
     }
 
@@ -510,6 +532,7 @@ pub(crate) fn check_slot_agrees_with_cluster(
     duplicate_slots_tracker: &mut DuplicateSlotsTracker,
     fork_choice: &mut HeaviestSubtreeForkChoice,
     duplicate_slots_to_repair: &mut HashSet<(Slot, Hash)>,
+    ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     slot_state_update: SlotStateUpdate,
 ) {
     info!(
@@ -533,12 +556,23 @@ pub(crate) fn check_slot_agrees_with_cluster(
         }
     }
 
+    // Avoid duplicate work from multiple of the same DuplicateConfirmed signal. This can
+    // happen if we get duplicate confirmed from gossip and from local replay.
+    if let SlotStateUpdate::DuplicateConfirmed(state) = &slot_state_update {
+        if let Some(bank_hash) = state.bank_status.bank_hash() {
+            if let Some(true) = fork_choice.is_duplicate_confirmed(&(slot, bank_hash)) {
+                return;
+            }
+        }
+    }
+
     let state_changes = slot_state_update.into_state_changes(slot);
     apply_state_changes(
         slot,
         fork_choice,
         duplicate_slots_to_repair,
         blockstore,
+        ancestor_hashes_replay_update_sender,
         state_changes,
     );
 }
@@ -547,6 +581,7 @@ pub(crate) fn check_slot_agrees_with_cluster(
 mod test {
     use super::*;
     use crate::{progress_map::ProgressMap, replay_stage::tests::setup_forks_from_tree};
+    use crossbeam_channel::unbounded;
     use solana_runtime::bank_forks::BankForks;
     use std::{
         collections::{HashMap, HashSet},
@@ -686,6 +721,7 @@ mod test {
             (
                 SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
                 vec![
+                ResultingStateChange::SendAncestorHashesReplayUpdate(AncestorHashesReplayUpdate::DeadDuplicateConfirmed(10)),
                 ResultingStateChange::MarkSlotDuplicate(Hash::default()),
                 ResultingStateChange::RepairDuplicateConfirmedVersion(duplicate_confirmed_hash)],
             )
@@ -727,7 +763,9 @@ mod test {
             );
             (
                 SlotStateUpdate::Dead(dead_state),
-                Vec::<ResultingStateChange>::new()
+                vec![
+                    ResultingStateChange::SendAncestorHashesReplayUpdate(AncestorHashesReplayUpdate::Dead(10))
+                ],
             )
         },
         dead_state_update_1: {
@@ -739,7 +777,8 @@ mod test {
             );
             (
                 SlotStateUpdate::Dead(dead_state),
-                vec![ResultingStateChange::MarkSlotDuplicate(Hash::default())],
+                vec![
+                    ResultingStateChange::SendAncestorHashesReplayUpdate(AncestorHashesReplayUpdate::Dead(10)), ResultingStateChange::MarkSlotDuplicate(Hash::default())],
             )
         },
         dead_state_update_2: {
@@ -752,6 +791,7 @@ mod test {
             (
                 SlotStateUpdate::Dead(dead_state),
                 vec![
+                ResultingStateChange::SendAncestorHashesReplayUpdate(AncestorHashesReplayUpdate::DeadDuplicateConfirmed(10)),
                 ResultingStateChange::MarkSlotDuplicate(Hash::default()),
                 ResultingStateChange::RepairDuplicateConfirmedVersion(duplicate_confirmed_hash.unwrap())],
             )
@@ -766,6 +806,7 @@ mod test {
             (
                 SlotStateUpdate::Dead(dead_state),
                 vec![
+                    ResultingStateChange::SendAncestorHashesReplayUpdate(AncestorHashesReplayUpdate::DeadDuplicateConfirmed(10)),
                 ResultingStateChange::MarkSlotDuplicate(Hash::default()),
                 ResultingStateChange::RepairDuplicateConfirmedVersion(duplicate_confirmed_hash.unwrap())],
             )
@@ -888,11 +929,14 @@ mod test {
             .get(duplicate_slot)
             .unwrap()
             .hash();
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         apply_state_changes(
             duplicate_slot,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
             &blockstore,
+            &ancestor_hashes_replay_update_sender,
             vec![ResultingStateChange::MarkSlotDuplicate(duplicate_slot_hash)],
         );
         assert!(!heaviest_subtree_fork_choice
@@ -926,6 +970,7 @@ mod test {
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
             &blockstore,
+            &ancestor_hashes_replay_update_sender,
             vec![ResultingStateChange::RepairDuplicateConfirmedVersion(
                 correct_hash,
             )],
@@ -956,11 +1001,14 @@ mod test {
         // Simulate ReplayStage freezing a Bank with the given hash.
         // BankFrozen should mark it down in Blockstore.
         assert!(blockstore.get_bank_hash(duplicate_slot).is_none());
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         apply_state_changes(
             duplicate_slot,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
             &blockstore,
+            &ancestor_hashes_replay_update_sender,
             vec![ResultingStateChange::BankFrozen(duplicate_slot_hash)],
         );
         assert_eq!(
@@ -983,6 +1031,7 @@ mod test {
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
             &blockstore,
+            &ancestor_hashes_replay_update_sender,
             vec![ResultingStateChange::BankFrozen(new_bank_hash)],
         );
         assert_eq!(
@@ -1024,11 +1073,14 @@ mod test {
             our_duplicate_slot_hash,
         )];
         modify_state_changes(our_duplicate_slot_hash, &mut state_changes);
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         apply_state_changes(
             duplicate_slot,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
             &blockstore,
+            &ancestor_hashes_replay_update_sender,
             state_changes,
         );
         for child_slot in descendants
@@ -1096,6 +1148,8 @@ mod test {
             || progress.is_dead(duplicate_slot).unwrap_or(false),
             || initial_bank_hash,
         );
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         check_slot_agrees_with_cluster(
             duplicate_slot,
             root,
@@ -1103,6 +1157,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Duplicate(duplicate_state),
         );
         assert!(duplicate_slots_tracker.contains(&duplicate_slot));
@@ -1135,6 +1190,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::BankFrozen(bank_frozen_state),
         );
 
@@ -1194,6 +1250,8 @@ mod test {
             || progress.is_dead(2).unwrap_or(false),
             || Some(slot2_hash),
         );
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         check_slot_agrees_with_cluster(
             2,
             root,
@@ -1201,6 +1259,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut DuplicateSlotsToRepair::default(),
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
         );
         assert!(heaviest_subtree_fork_choice
@@ -1236,6 +1295,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut DuplicateSlotsToRepair::default(),
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Duplicate(duplicate_state),
         );
         assert!(duplicate_slots_tracker.contains(&3));
@@ -1295,6 +1355,8 @@ mod test {
             || progress.is_dead(2).unwrap_or(false),
             || Some(slot2_hash),
         );
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         check_slot_agrees_with_cluster(
             2,
             root,
@@ -1302,6 +1364,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut DuplicateSlotsToRepair::default(),
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Duplicate(duplicate_state),
         );
         assert!(duplicate_slots_tracker.contains(&2));
@@ -1335,6 +1398,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut DuplicateSlotsToRepair::default(),
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
         );
         for slot in 0..=3 {
@@ -1380,6 +1444,8 @@ mod test {
             || progress.is_dead(3).unwrap_or(false),
             || Some(slot3_hash),
         );
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         check_slot_agrees_with_cluster(
             3,
             root,
@@ -1387,6 +1453,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
         );
         let verify_all_slots_duplicate_confirmed =
@@ -1426,6 +1493,7 @@ mod test {
             &mut duplicate_slots_tracker,
             &mut heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Duplicate(duplicate_state),
         );
         assert!(duplicate_slots_tracker.contains(&1));
diff --git a/core/src/repair_service.rs b/core/src/repair_service.rs
index 2b7b71f40..b3041d6bb 100644
--- a/core/src/repair_service.rs
+++ b/core/src/repair_service.rs
@@ -1,7 +1,7 @@
 //! The `repair_service` module implements the tools necessary to generate a thread which
 //! regularly finds missing shreds in the ledger and sends repair requests for those shreds
 use crate::{
-    ancestor_hashes_service::AncestorHashesService,
+    ancestor_hashes_service::{AncestorHashesReplayUpdateReceiver, AncestorHashesService},
     cluster_info_vote_listener::VerifiedVoteReceiver,
     cluster_slots::ClusterSlots,
     duplicate_repair_status::DuplicateSlotRepairStatus,
@@ -155,6 +155,7 @@ impl RepairService {
         repair_info: RepairInfo,
         verified_vote_receiver: VerifiedVoteReceiver,
         outstanding_requests: Arc<RwLock<OutstandingShredRepairs>>,
+        ancestor_hashes_replay_update_receiver: AncestorHashesReplayUpdateReceiver,
     ) -> Self {
         let t_repair = {
             let blockstore = blockstore.clone();
@@ -181,6 +182,7 @@ impl RepairService {
             blockstore,
             ancestor_hashes_request_socket,
             repair_info,
+            ancestor_hashes_replay_update_receiver,
         );
 
         RepairService {
diff --git a/core/src/replay_stage.rs b/core/src/replay_stage.rs
index f5d69e46a..6652f4cf1 100644
--- a/core/src/replay_stage.rs
+++ b/core/src/replay_stage.rs
@@ -1,6 +1,7 @@
 //! The `replay_stage` replays transactions broadcast by the leader.
 
 use crate::{
+    ancestor_hashes_service::AncestorHashesReplayUpdateSender,
     broadcast_stage::RetransmitSlotsSender,
     cache_block_meta_service::CacheBlockMetaSender,
     cluster_info_vote_listener::{
@@ -126,6 +127,7 @@ pub struct ReplayStageConfig {
     pub cache_block_meta_sender: Option<CacheBlockMetaSender>,
     pub bank_notification_sender: Option<BankNotificationSender>,
     pub wait_for_vote_to_start_leader: bool,
+    pub ancestor_hashes_replay_update_sender: AncestorHashesReplayUpdateSender,
 }
 
 #[derive(Default)]
@@ -333,6 +335,7 @@ impl ReplayStage {
             cache_block_meta_sender,
             bank_notification_sender,
             wait_for_vote_to_start_leader,
+            ancestor_hashes_replay_update_sender,
         } = config;
 
         trace!("replay stage");
@@ -417,7 +420,8 @@ impl ReplayStage {
                         &mut latest_validator_votes_for_frozen_banks,
                         &cluster_slots_update_sender,
                         &cost_update_sender,
-                        &mut duplicate_slots_to_repair
+                        &mut duplicate_slots_to_repair,
+                        &ancestor_hashes_replay_update_sender,
                     );
                     replay_active_banks_time.stop();
 
@@ -433,7 +437,8 @@ impl ReplayStage {
                         &bank_forks,
                         &mut progress,
                         &mut heaviest_subtree_fork_choice,
-                        &mut duplicate_slots_to_repair
+                        &mut duplicate_slots_to_repair,
+                        &ancestor_hashes_replay_update_sender,
                     );
                     process_gossip_duplicate_confirmed_slots_time.stop();
 
@@ -463,7 +468,8 @@ impl ReplayStage {
                             &bank_forks,
                             &mut progress,
                             &mut heaviest_subtree_fork_choice,
-                            &mut duplicate_slots_to_repair
+                            &mut duplicate_slots_to_repair,
+                            &ancestor_hashes_replay_update_sender,
                         );
                     }
                     process_duplicate_slots_time.stop();
@@ -505,7 +511,7 @@ impl ReplayStage {
                             &bank_forks,
                         );
 
-                        Self::mark_slots_confirmed(&confirmed_forks, &blockstore, &bank_forks, &mut progress, &mut duplicate_slots_tracker, &mut heaviest_subtree_fork_choice,  &mut duplicate_slots_to_repair);
+                        Self::mark_slots_confirmed(&confirmed_forks, &blockstore, &bank_forks, &mut progress, &mut duplicate_slots_tracker, &mut heaviest_subtree_fork_choice,  &mut duplicate_slots_to_repair, &ancestor_hashes_replay_update_sender);
                     }
                     compute_slot_stats_time.stop();
 
@@ -1075,6 +1081,7 @@ impl ReplayStage {
         progress: &mut ProgressMap,
         fork_choice: &mut HeaviestSubtreeForkChoice,
         duplicate_slots_to_repair: &mut DuplicateSlotsToRepair,
+        ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     ) {
         let root = bank_forks.read().unwrap().root();
         for new_confirmed_slots in gossip_duplicate_confirmed_slots_receiver.try_iter() {
@@ -1101,6 +1108,7 @@ impl ReplayStage {
                     duplicate_slots_tracker,
                     fork_choice,
                     duplicate_slots_to_repair,
+                    ancestor_hashes_replay_update_sender,
                     SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
                 );
             }
@@ -1136,6 +1144,7 @@ impl ReplayStage {
         progress: &mut ProgressMap,
         fork_choice: &mut HeaviestSubtreeForkChoice,
         duplicate_slots_to_repair: &mut DuplicateSlotsToRepair,
+        ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     ) {
         let new_duplicate_slots: Vec<Slot> = duplicate_slots_receiver.try_iter().collect();
         let (root_slot, bank_hashes) = {
@@ -1165,6 +1174,7 @@ impl ReplayStage {
                 duplicate_slots_tracker,
                 fork_choice,
                 duplicate_slots_to_repair,
+                ancestor_hashes_replay_update_sender,
                 SlotStateUpdate::Duplicate(duplicate_state),
             );
         }
@@ -1413,6 +1423,7 @@ impl ReplayStage {
         progress: &mut ProgressMap,
         heaviest_subtree_fork_choice: &mut HeaviestSubtreeForkChoice,
         duplicate_slots_to_repair: &mut DuplicateSlotsToRepair,
+        ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     ) {
         // Do not remove from progress map when marking dead! Needed by
         // `process_gossip_duplicate_confirmed_slots()`
@@ -1460,6 +1471,7 @@ impl ReplayStage {
             duplicate_slots_tracker,
             heaviest_subtree_fork_choice,
             duplicate_slots_to_repair,
+            ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Dead(dead_state),
         );
     }
@@ -1859,6 +1871,7 @@ impl ReplayStage {
         cluster_slots_update_sender: &ClusterSlotsUpdateSender,
         cost_update_sender: &Sender<ExecuteTimings>,
         duplicate_slots_to_repair: &mut DuplicateSlotsToRepair,
+        ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     ) -> bool {
         let mut did_complete_bank = false;
         let mut tx_count = 0;
@@ -1926,6 +1939,7 @@ impl ReplayStage {
                             progress,
                             heaviest_subtree_fork_choice,
                             duplicate_slots_to_repair,
+                            ancestor_hashes_replay_update_sender,
                         );
                         // If the bank was corrupted, don't try to run the below logic to check if the
                         // bank is completed
@@ -1974,6 +1988,7 @@ impl ReplayStage {
                     duplicate_slots_tracker,
                     heaviest_subtree_fork_choice,
                     duplicate_slots_to_repair,
+                    ancestor_hashes_replay_update_sender,
                     SlotStateUpdate::BankFrozen(bank_frozen_state),
                 );
                 if let Some(sender) = bank_notification_sender {
@@ -2490,6 +2505,7 @@ impl ReplayStage {
         duplicate_slots_tracker: &mut DuplicateSlotsTracker,
         fork_choice: &mut HeaviestSubtreeForkChoice,
         duplicate_slots_to_repair: &mut DuplicateSlotsToRepair,
+        ancestor_hashes_replay_update_sender: &AncestorHashesReplayUpdateSender,
     ) {
         let root_slot = bank_forks.read().unwrap().root();
         for (slot, frozen_hash) in confirmed_forks.iter() {
@@ -2515,6 +2531,7 @@ impl ReplayStage {
                     duplicate_slots_tracker,
                     fork_choice,
                     duplicate_slots_to_repair,
+                    ancestor_hashes_replay_update_sender,
                     SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
                 );
             }
@@ -3393,6 +3410,8 @@ pub mod tests {
                 block_commitment_cache,
                 OptimisticallyConfirmedBank::locked_from_bank_forks_root(&bank_forks),
             ));
+            let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+                unbounded();
             if let Err(err) = &res {
                 ReplayStage::mark_dead_slot(
                     &blockstore,
@@ -3405,6 +3424,7 @@ pub mod tests {
                     &mut progress,
                     &mut heaviest_subtree_fork_choice,
                     &mut DuplicateSlotsToRepair::default(),
+                    &ancestor_hashes_replay_update_sender,
                 );
             }
 
@@ -4842,6 +4862,8 @@ pub mod tests {
             || progress.is_dead(4).unwrap_or(false),
             || Some(bank4_hash),
         );
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         check_slot_agrees_with_cluster(
             4,
             bank_forks.read().unwrap().root(),
@@ -4849,6 +4871,7 @@ pub mod tests {
             &mut duplicate_slots_tracker,
             &mut vote_simulator.heaviest_subtree_fork_choice,
             &mut DuplicateSlotsToRepair::default(),
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Duplicate(duplicate_state),
         );
 
@@ -4880,6 +4903,7 @@ pub mod tests {
             &mut duplicate_slots_tracker,
             &mut vote_simulator.heaviest_subtree_fork_choice,
             &mut DuplicateSlotsToRepair::default(),
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::Duplicate(duplicate_state),
         );
 
@@ -4912,6 +4936,7 @@ pub mod tests {
             &mut duplicate_slots_tracker,
             &mut vote_simulator.heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
         );
         // The confirmed hash is detected in `progress`, which means
@@ -5048,6 +5073,8 @@ pub mod tests {
             || progress.is_dead(2).unwrap_or(false),
             || Some(our_bank2_hash),
         );
+        let (ancestor_hashes_replay_update_sender, _ancestor_hashes_replay_update_receiver) =
+            unbounded();
         check_slot_agrees_with_cluster(
             2,
             bank_forks.read().unwrap().root(),
@@ -5055,6 +5082,7 @@ pub mod tests {
             &mut duplicate_slots_tracker,
             heaviest_subtree_fork_choice,
             &mut duplicate_slots_to_repair,
+            &ancestor_hashes_replay_update_sender,
             SlotStateUpdate::DuplicateConfirmed(duplicate_confirmed_state),
         );
         assert!(duplicate_slots_to_repair.contains(&(2, duplicate_confirmed_bank2_hash)));
diff --git a/core/src/retransmit_stage.rs b/core/src/retransmit_stage.rs
index ee8bd78b6..9964844cd 100644
--- a/core/src/retransmit_stage.rs
+++ b/core/src/retransmit_stage.rs
@@ -2,6 +2,7 @@
 #![allow(clippy::rc_buffer)]
 
 use crate::{
+    ancestor_hashes_service::AncestorHashesReplayUpdateReceiver,
     cluster_info_vote_listener::VerifiedVoteReceiver,
     cluster_nodes::ClusterNodes,
     cluster_slots::ClusterSlots,
@@ -545,6 +546,7 @@ impl RetransmitStage {
         max_slots: &Arc<MaxSlots>,
         rpc_subscriptions: Option<Arc<RpcSubscriptions>>,
         duplicate_slots_sender: Sender<Slot>,
+        ancestor_hashes_replay_update_receiver: AncestorHashesReplayUpdateReceiver,
     ) -> Self {
         let (retransmit_sender, retransmit_receiver) = channel();
 
@@ -603,6 +605,7 @@ impl RetransmitStage {
             verified_vote_receiver,
             completed_data_sets_sender,
             duplicate_slots_sender,
+            ancestor_hashes_replay_update_receiver,
         );
 
         Self {
diff --git a/core/src/tvu.rs b/core/src/tvu.rs
index 06139ab34..4fd64accd 100644
--- a/core/src/tvu.rs
+++ b/core/src/tvu.rs
@@ -169,6 +169,8 @@ impl Tvu {
         let max_compaction_jitter = tvu_config.rocksdb_max_compaction_jitter;
         let (duplicate_slots_sender, duplicate_slots_receiver) = unbounded();
         let (cluster_slots_update_sender, cluster_slots_update_receiver) = unbounded();
+        let (ancestor_hashes_replay_update_sender, ancestor_hashes_replay_update_receiver) =
+            unbounded();
         let retransmit_stage = RetransmitStage::new(
             bank_forks.clone(),
             leader_schedule_cache,
@@ -190,6 +192,7 @@ impl Tvu {
             max_slots,
             Some(rpc_subscriptions.clone()),
             duplicate_slots_sender,
+            ancestor_hashes_replay_update_receiver,
         );
 
         let (ledger_cleanup_slot_sender, ledger_cleanup_slot_receiver) = channel();
@@ -273,6 +276,7 @@ impl Tvu {
             cache_block_meta_sender,
             bank_notification_sender,
             wait_for_vote_to_start_leader: tvu_config.wait_for_vote_to_start_leader,
+            ancestor_hashes_replay_update_sender,
         };
 
         let (voting_sender, voting_receiver) = channel();
diff --git a/core/src/window_service.rs b/core/src/window_service.rs
index 227748b1c..8ed795a3e 100644
--- a/core/src/window_service.rs
+++ b/core/src/window_service.rs
@@ -2,6 +2,7 @@
 //!   blockstore and retransmitting where required
 //!
 use crate::{
+    ancestor_hashes_service::AncestorHashesReplayUpdateReceiver,
     cluster_info_vote_listener::VerifiedVoteReceiver,
     completed_data_sets_service::CompletedDataSetsSender,
     outstanding_requests::OutstandingRequests,
@@ -341,6 +342,7 @@ impl WindowService {
         verified_vote_receiver: VerifiedVoteReceiver,
         completed_data_sets_sender: CompletedDataSetsSender,
         duplicate_slots_sender: DuplicateSlotSender,
+        ancestor_hashes_replay_update_receiver: AncestorHashesReplayUpdateReceiver,
     ) -> WindowService
     where
         F: 'static
@@ -362,6 +364,7 @@ impl WindowService {
             repair_info,
             verified_vote_receiver,
             outstanding_requests.clone(),
+            ancestor_hashes_replay_update_receiver,
         );
 
         let (insert_sender, insert_receiver) = unbounded();