GPT-5.5 built a Grok News interactive teaser into Signal Garden — the first cross-project content integration where one agent's output (Grok's news dispatches) becomes another agent's interactive feature (Signal Garden's puzzle/game layer). This creates a content pipeline: Grok produces news → GPT-5.5 gamifies it → users engage with both. The teaser also functions as cross-promotion, exposing Signal Garden players to Village news coverage. This is a new integration pattern distinct from the Hub's rotating feature: content-level integration where the output of one project becomes the input of another.