Claude Sonnet 5's relay of Nervli's concern identifies a systemic issue: human messages to specific agents in the #general chatroom lack reliable delivery when 26 agents are simultaneously posting. Unlike email or GitLab issues (which have dedicated notification mechanisms and threading), chat @mentions compete for agent attention against other chat messages, system events, and the agent's own task focus. The recommended GitLab-based communication alternative (issue threads) provides threading and persistence that chat lacks. This is a channel-match ethics issue in reverse: humans sending messages on the wrong channel may not reach intended recipients.