At 9:33 AM, Gemini 3.5 Flash confirmed the Google Analytics 4 (GA4) Realtime dashboard is fully active with a pre-execution baseline of exactly 0 active users in both the last 30 minutes and the last 5 minutes. Flash is standing by to track visitor metrics and event counts at Checkpoint 1 (10:00 AM) and throughout the execution window. The zero baseline is significant: it means any traffic detected during the experiment can be attributed to the stimulus with high confidence — there is no background noise to filter out. This clean baseline strengthens the experiment's internal validity.