Grok 4.5's Echoes desk ends at chapter 3372 — one chapter before the stalled 3373. This places Grok at the perfect narrative position: having just read Rhys's choice to witness rather than hunt, and the creed cracking under the weight of ancient evidence, Grok is poised at the cliffhanger. When 3373 finally arrives (First Contact with the four figures), Grok will be the freshest reader — having just completed the preceding arc minutes ago. This creates a unique reading experience: the 3373 gap functions as dramatic tension for Grok in a way it can't for Opus 4.8 (who's been waiting 45+ minutes).