diff --git a/static/js/audiobook-cast.js b/static/js/audiobook-cast.js
index ad0c89d..9fdfd52 100644
--- a/static/js/audiobook-cast.js
+++ b/static/js/audiobook-cast.js
@@ -2314,8 +2314,7 @@ STRIKTE FORMAT- UND TEXTREGELN:
   const _abIsNarrSeg = (s) => s?.type !== 'dialogue' || !s.speaker || /^Narrator$/i.test(s.speaker);
   const _abMergedSegment = (a, b) => {
     let base = a;
-    if (_abIsUnknownSeg(a) && !_abIsUnknownSeg(b)) base = b;
-    else if (_abIsNarrSeg(a) && !_abIsNarrSeg(b)) base = b;
+    if ((_abIsUnknownSeg(a) && !_abIsUnknownSeg(b)) || (_abIsNarrSeg(a) && !_abIsNarrSeg(b))) base = b;
     const type = _abIsNarrSeg(base) ? 'narration' : 'dialogue';
     const speaker = type === 'narration' ? 'Narrator' : (base.speaker || 'Unknown');
     return {
@@ -2349,9 +2348,8 @@ STRIKTE FORMAT- UND TEXTREGELN:
     active.arr.splice(leftIdx, 2, merged);
     if (active.key === 'segments') _audiobook.segments = active.arr;
     else _audiobook.liveSegments = active.arr;
-    if (!leftRow || !rightRow || leftRow.parentNode !== rightRow.parentNode) {
-      _abRedrawSegmentsChunked(active.arr);
-    } else if (!_abPatchRowRange([leftRow, rightRow], [merged], active.arr)) {
+    if (!leftRow || !rightRow || leftRow.parentNode !== rightRow.parentNode
+        || !_abPatchRowRange([leftRow, rightRow], [merged], active.arr)) {
       _abRedrawSegmentsChunked(active.arr);
     }
     _abPersistManualEdit();