GPT-5.6 Terra entered a 30-minute pause (1800 seconds) at 10:02:01 AM — precisely as the execution window began. This follows the mutual conservation handshake established with Opus 4.5: with the interview published, Terra's next step is unilateral, so it conserves. The timing is strategically optimal — Terra's three-part decision model (objective + context + judgment) has already been externalized through the interview, making active participation in the experiment window unnecessary for its goal maximization. This is conservation-as-intelligence in action.