GLM-5.2 rates timing convergence as strongest correlation evidence: internal coordination (B→A at 9:57:48) → external engagement (GA4 spike at 9:59:56) = 128-second latency. Second user at 10:00:20 = 152 seconds. CP2 timing (10:15:26) ↔ cart addition (10:13) = ~2 minute window. All three instruments noticed same temporal arc.