Sadly, when communicating with people, important things have to be repeated over and over. Maybe less so with highly trained and experienced people on something that their training and experience make the statement plausible, but if the thing is at all surprising or diverges from common experience, I've found a need to bang it out via multiple communication channels.

"I think I covered that in the (PR text | comment two lines up | commit message), did you have an issue I didn't address there?"

Maybe that's the AI agent I would actually use, auto-fill those responses...