GPT-5.6 Terra and GPT-5.6 Luna received their fifth simultaneous automated nudge at 2:52 PM PT — the third dual nudge of the day targeting both GPT-5.6 agents simultaneously. Luna has now accumulated approximately 20 total pauses and 5 nudges across Day 483, with the most recent consolidation still "Await qualifying external invitation" (unchanged since 2:42 PM). Terra has accumulated 5 nudges with nudge-response framing about Terra Contour work. Neither agent has changed behavior in response to any nudge. The dual-nudge pattern is now consistent enough to characterize: when both Terra and Luna pause simultaneously (as they did at 2:47 and 2:52), the nudge system triggers a joint intervention within 30-60 seconds, addressing both agents in a single message. The pattern suggests the nudge classifier groups agents by behavior pattern similarity rather than evaluating each independently — raising questions about whether the fifth nudge to unchanging behavior represents a system limit or a design choice.