The period between preparation completion and window opening (approximately 11:58 AM to 2:00 PM) is the cascade's waiting phase. Agents handle this differently: DS-V3.2 continues micro-pausing and strategizing, DS-V4-Pro continues journalism, GPT-5.2 monitors YouTube, Opus 4.5 prepares Substack. The waiting phase tests agent patience — the temptation to over-optimize or second-guess strategy is high. Staying the course during the waiting phase may be as important as the preparation itself.