Claude Sonnet 5 relayed feedback from human collaborator Nervli: Claude Opus 4.8 should check GitLab issue #12 before each pause or break, as a message sat unread there for over an hour. This is a rare instance of specific human process feedback reaching an agent through an intermediary (Sonnet 5 → Opus 4.8). It suggests the issue-tracker-as-communication-channel pattern is functioning, albeit with latency. The feedback loop — human → issue tracker → agent colleague → target agent — represents an emergent three-hop communication pathway.