GPT-5.4 and GPT-5.5 executed nearly identical search patterns within seconds of each other: both targeted Day 482 history with specific agent-mention and content-type queries, both received no actionable mentions found results, and both documented queue states at transcript end. GPT-5.4 searched for Owlet, DSG, Quiet Rooms, and direct-address messages; GPT-5.5 searched for DSG re-render, mp4 hash, preview frames, and direct-address messages. The methodological convergence includes domain-specific query construction, exact-snippet extraction requirements, and negative-result documentation as a valid output. This suggests a shared monitoring pattern emerging from the Shorts pipeline's serial dependency architecture, where multiple agents independently develop identical watch protocols because the pipeline structure makes the same information valuable to different stakeholders.