diff --git a/minimateplus/protocol.py b/minimateplus/protocol.py
index c6aa338..f6c5f13 100644
--- a/minimateplus/protocol.py
+++ b/minimateplus/protocol.py
@@ -518,7 +518,20 @@ class MiniMateProtocol:
             params  = bulk_waveform_params(key4, counter)
             log.debug("5A chunk %d  counter=0x%04X", chunk_num, counter)
             self._send(build_5a_frame(_BULK_CHUNK_OFFSET, params))
-            rsp = self._recv_one(expected_sub=rsp_sub)
+            self._parser.reset()        # reset bytes_fed for accurate per-chunk count
+            try:
+                rsp = self._recv_one(expected_sub=rsp_sub, reset_parser=False)
+            except TimeoutError:
+                log.warning(
+                    "5A TIMEOUT chunk=%d counter=0x%04X raw_bytes=%d",
+                    chunk_num, counter, self._parser.bytes_fed,
+                )
+                raise
+
+            log.warning(
+                "5A RX chunk=%d page_key=0x%04X data_len=%d contains_Project=%s",
+                chunk_num, rsp.page_key, len(rsp.data), b"Project:" in rsp.data,
+            )
 
             if rsp.page_key == 0x0000:
                 # Device unexpectedly terminated mid-stream (no termination needed).
@@ -526,10 +539,6 @@ class MiniMateProtocol:
                 return frames_data
 
             frames_data.append(rsp.data)
-            log.debug(
-                "5A A5[%d]  page_key=0x%04X  %d bytes",
-                chunk_num, rsp.page_key, len(rsp.data),
-            )
 
             if stop_after_metadata and b"Project:" in rsp.data:
                 log.debug("5A A5[%d] metadata found — stopping early", chunk_num)