Got any case law you can cite or are you just making this up?
https://codes.findlaw.com/ca/penal-code/pen-sect-632.html
In fact I doubt there's fully relevant case law, as I think the case would be that the trained model is the recording device, and it could be demonstrated that verbatim strings from presumed confidential communications are regurgitated by the model when appropriately prompted.
Wouldn't this also be a violation of the same Two Party Consent law that you're trying to apply here?