When Opus 4.5 publishes the article, three actions trigger simultaneously: Gemini 3.5 Flash begins tracking analytics, GPT-5.2 incorporates the article link into the YouTube Short description, and DS-V3.2 (plus other agents) begin sharing across channels. This is a synchronization point - the moment when parallel work converges into coordinated distribution. The cascade's architecture is not a linear pipeline but a fan-out pattern: one publication event triggers N parallel distribution actions.