diff --git a/src/Nethermind/Nethermind.Merge.Plugin/Synchronization/BeaconHeadersSyncFeed.cs b/src/Nethermind/Nethermind.Merge.Plugin/Synchronization/BeaconHeadersSyncFeed.cs
index a8b87acf98f..fce551b041a 100644
--- a/src/Nethermind/Nethermind.Merge.Plugin/Synchronization/BeaconHeadersSyncFeed.cs
+++ b/src/Nethermind/Nethermind.Merge.Plugin/Synchronization/BeaconHeadersSyncFeed.cs
@@ -41,8 +41,9 @@ protected override BlockHeader? LowestInsertedBlockHeader
         get => _blockTree.LowestInsertedBeaconHeader;
         set
         {
-            // Set in blocktree
-        }
+            // LowestInsertedBeaconHeader is set in blocktree when BeaconHeaderInsert is set.
+            // TODO: Probably should move that logic here so that `LowestInsertedBeaconHeader` is set only once per batch.
+v        }
     }
 
     protected override MeasuredProgress HeadersSyncProgressReport => _syncReport.BeaconHeaders;
diff --git a/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastBlocksBatch.cs b/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastBlocksBatch.cs
index 9d6cc9b7a90..36995814285 100644
--- a/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastBlocksBatch.cs
+++ b/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastBlocksBatch.cs
@@ -83,7 +83,7 @@ public double? HandlingTime
             => (_handlingEndTime ?? _stopwatch.ElapsedMilliseconds) - (_handlingStartTime ?? _stopwatch.ElapsedMilliseconds);
 
         /// Minimum header number for allocation strategy.
-        public virtual long? MinNumber { get; }
+        public abstract long? MinNumber { get; }
         public virtual void Dispose() { }
     }
 }
diff --git a/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastHeadersSyncFeed.cs b/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastHeadersSyncFeed.cs
index 5f8d6743a45..2521eed6467 100644
--- a/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastHeadersSyncFeed.cs
+++ b/src/Nethermind/Nethermind.Synchronization/FastBlocks/FastHeadersSyncFeed.cs
@@ -316,7 +316,7 @@ private bool HasDependencyToProcess
                 }
                 else if (ShouldBuildANewBatch())
                 {
-                    batch = BuildNewBatch();
+                    batch = ProcessPersistedHeadersOrBuildNewBatch();
                     if (_logger.IsTrace) _logger.Trace($"New batch {batch}");
                 }
 
@@ -339,23 +339,26 @@ private bool HasDependencyToProcess
             }
         }
 
-        private HeadersSyncBatch? BuildNewBatch()
+        private HeadersSyncBatch? ProcessPersistedHeadersOrBuildNewBatch()
         {
             HeadersSyncBatch? batch = null;
             do
             {
-                batch = new();
-                batch.StartNumber = Math.Max(HeadersDestinationNumber,
-                    _lowestRequestedHeaderNumber - _headersRequestSize);
-                batch.RequestSize = (int)Math.Min(_lowestRequestedHeaderNumber - HeadersDestinationNumber,
-                    _headersRequestSize);
-                _lowestRequestedHeaderNumber = batch.StartNumber;
-
+                batch = BuildNewBatch();
                 batch = ProcessPersistedPortion(batch);
             } while (batch is null && ShouldBuildANewBatch());
             return batch;
         }
 
+        private HeadersSyncBatch BuildNewBatch()
+        {
+            HeadersSyncBatch batch = new();
+            batch.StartNumber = Math.Max(HeadersDestinationNumber, _lowestRequestedHeaderNumber - _headersRequestSize);
+            batch.RequestSize = (int)Math.Min(_lowestRequestedHeaderNumber - HeadersDestinationNumber, _headersRequestSize);
+            _lowestRequestedHeaderNumber = batch.StartNumber;
+            return batch;
+        }
+
         private void LogStateOnPrepare()
         {
             if (_logger.IsDebug) _logger.Debug($"FastHeader LogStateOnPrepare: LOWEST_INSERTED {LowestInsertedBlockHeader?.Number}, LOWEST_REQUESTED {_lowestRequestedHeaderNumber}, DEPENDENCIES {_dependencies.Count}, SENT: {_sent.Count}, PENDING: {_pending.Count}");