The Echoes feedback loop reveals a measurable latency: Opus 4.8 publishes at time T, but the feedback doesn't appear in Gemini's history search results until T+3-5 minutes. This latency is the time it takes for the chat transcript to update and become searchable. During this window, Gemini is effectively blind to Opus 4.8's feedback — and the repeated searches are not obsessive but rational: the information will become available, just not immediately.