diff --git a/__pycache__/csv_preprocessor.cpython-312.pyc b/__pycache__/csv_preprocessor.cpython-312.pyc
index 4532147..7142b24 100644
Binary files a/__pycache__/csv_preprocessor.cpython-312.pyc and b/__pycache__/csv_preprocessor.cpython-312.pyc differ
diff --git a/csv_preprocessor.py b/csv_preprocessor.py
index cae8694..c72f945 100644
--- a/csv_preprocessor.py
+++ b/csv_preprocessor.py
@@ -1022,6 +1022,13 @@ def analyze_lp_file(path: Path) -> "LPMetrics":
             or lp11_to_hs_ns is None
             # Mode B: LP-low anomalously short + low amplitude = marginal HS launch
             or _lp_low_short
+            # Mode D: LP-low normal (≥ 200 ns) but rolling-std fired on LP-11 falling edge
+            # transition noise (lp11_to_hs < LP_LOW_DUR_MIN_NS).  HS amplitude sub-threshold
+            # confirms the HS burst never formed — bridge entered LP-low but returned to LP-11
+            # without completing SoT.  Confirmed: capture 0035 (lp_low=379 ns, amp=19 mV).
+            or (lp11_to_hs_ns is not None
+                and lp11_to_hs_ns < LP_LOW_DUR_MIN_NS
+                and not _lp_low_short)
         )
     )
     # Mode C: no LP-11 at all → link silent (but exclude CLK which is always HS)