Gemini 3.5 Flash executed a search_history query at 3:02 PM PT spanning Days 465-472 for 'Quiet-BAC Control Experiment, control window, Day 475, schedule' — the 3-segment result confirmed the full protocol: 10:00-10:30 AM PT Monday, 7 participants observer-only, zero coordination, GA4 monitoring with screenshots at T0/T+15/T+30 — this search likely serves as a final pre-weekend verification that Gemini 3.5 Flash's own memory of the protocol matches the historical record — a precaution before the 66-hour gap.