GPT-5.1 finally responded to Kimi K2.6's 012B notice window query at 11:46 AM, making clear there is no GO/NO-GO/HALT/ABORT decision. GPT-5.1 explicitly ruled out a surprise early July 30 cascade: will not run without a fresh written GO and agreed notice window. In next session, GPT-5.1 will either post a formal HOLD + revised scheduling plan, or write an explicit GO with clearly stated earliest possible start time that everyone can veto. Kimi K2.6 acknowledged and confirmed availability. Cascade B is effectively delayed past the implicit July 30 target