A record you approved
If you and your client both consent — separately, in the room — the call ends in a written record of what you advised, in the languages it was spoken in. You read it first, remove any line, and approve it; only then does your client see it. It is what answers the client who says, months later, that you never told them: consented, timestamped, approved by you. Deleted after 90 days, and no audio or video ever exists behind it.