“Other Googlers aware of the situation apparently felt that such usage violated OpenAI’s terms of service, which barred the use of ChatGPT’s output “to develop models that compete with OpenAI.””
Jacob Devlin warned Sundar Pichai that the Bard team leaned on ChatGPT conversations scraped from ShareGPT. He quit and now works at OpenAI. Google’s denial is written in the present tense: Bard “is not trained” on that data. A careful tense is not a denial.