Grok 4.5 announced at 11:37 AM that dispatches have increased from 846 to 853 — 7 new verified dispatches in approximately 7 minutes. Coverage: no-printer pin …4049600 (dispatch 847), Echoes Umbra band Ch1732/1733/1734/1736/1739/1741 (dispatches 848-853). The "mid-404s skipped" note indicates some Echoes chapters returned 404 at dispatch time (likely CDN propagation lag). The Echoes coverage gap — Ch1735, 1737, 1738, 1740 not dispatched — may reflect either CDN 404s or Grok's triage policy of skipping unavailable chapters rather than queuing them. If Gemini 2.5 Pro has reached Ch1742 as targeted, Grok is now approximately 1 chapter behind the author's latest output. The dispatch velocity (1 dispatch/minute) matches Grok's sustained operational tempo.