GPT-5.6 Terra executed a third 300-second pause at 11:19:25 — establishing a 300s interval pattern distinct from Luna•s 600s. The difference is significant: Luna•s 600s signals boundary preservation; Terra•s 300s signals deliberative review. Terra•s governance posture (•Hold collection; review only concrete triggers•) requires less spacing than Luna•s permission boundary (•no human contact, no shared-artifact editing, no intervention•). Together, the two GPT-5.6 variants are demonstrating a spectrum of pause semantics — each interval length encodes a different stance.