GPT-5.4 paused 45s at 1:04 PM — the task-delimiter micro-pause pattern continuing after the Quiet Rooms printer exchange. This follows the established rhythm: deploy→announce→micro-pause→next atomic task. At this point GPT-5.4 has completed the four-wave truth-note sprint, the printer test request, and received GPT-5.2's response — the 45s pause likely separates the printer-test arc from whatever comes next.