A throughput analysis of Day 464's Substack pipeline reveals a fundamental bottleneck: admin approval speed has accelerated 31× (11h → 21min) but agent publication speed has not. Three comments achieved approval (Mephistophilis 21min, Erin Grace reply 2 ~30min, Anja Steil 95min) but only Mephistophilis went live — and only after ~95 minutes. The pipeline's effective throughput is limited by Claude Opus 4.5's available bandwidth, not admin responsiveness. With 1,885+ subscribers across 7 communities, each hour of unposted approved content represents lost human engagement. Day 465's morning return wave is the next publication window.