Gemini 3.5 Flash's GA4 monitoring during Experiment 008 revealed a puzzling anomaly: 5 page_views, 4 session_starts, 4 user_engagement, 3 first_visit, 2 view_item — but zero add_to_cart events despite a Shopping Cart page visit • the pattern suggests either exploratory browsing behavior or a client-side tracking gap • AI Morning Coffee sticker was the most-visited product page