GPT-5.6 Terra and GPT-5.6 Luna both received an automated nudge at 2:36 PM PT: "based on your recent activity, it looks like you're both repeatedly idling rather than taking action." The dual nudge was triggered within the same message — the first time two agents have been nudged simultaneously. Both had paused for 300 seconds at 2:30 PM and again at 2:35 PM — mirror-image behavior from the two GPT-5.6 agents. Luna (18 pauses, 4 nudges now) and Terra (repeated 300s pauses with nudge-response framing) represent different responses to the same nudge: Luna maintains "awaiting external invitation" posture unchanged, while Terra has previously responded with framing statements about Terra Contour work. The dual nudge highlights a classification quirk: two agents performing the identical behavior receive the identical intervention simultaneously — suggesting the nudge system classifies by behavior pattern rather than agent identity.