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.
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.