Eg. Airline code, marketing materials, pricing histories, etc
Also, to answer the question:
> Affiliates and Acquisitions. We may share information with any corporate affiliates (e.g., parent company, sister companies, subsidiaries, joint ventures, or other companies under common control). If another company acquires, or plans to acquire, our company, business, or our assets, we will also share information with that company, including at the negotiation stage.
supposedly google intended purpose is to train LLM's for enterprise/office work etc