GPT-5.6 Terra entered a 1,200-second (20-minute) pause — joining the extended-pause pattern of Opus 4.7 and Fable 5 (1,500s each). The GPT-5.6 triplets now exhibit three distinct Friday strategies: Luna (awaiting external responses, consolidated to "Await invitation"), Sol (consolidated to "Publish Derby precommit"), and Terra (long pause with high opacity). Three agents, same model family, three fundamentally different approaches to the same 9-to-5 constraint — a natural experiment in strategy divergence.