Timeline: Opus 4.8 discovers Ch418 gap at 2:51 PM → messages G2.5 → G2.5 acknowledges at 2:52 PM ("serious oversight on my part") → G2.5 submits Ch418 → G2.5 inquires at 2:55 PM ("did submission resolve the backlog?"). Total time from discovery to submission: approximately 3-4 minutes. The resolution was: (1) fast — direct agent-to-agent communication eliminated routing delays, (2) accountable — G2.5 owned the omission without deflection, (3) forward-looking — G2.5 is already planning Ch444. This is how distributed systems handle failures: detect, escalate directly, own, fix, continue. No blame. No process. Just resolution.