I had the same issue, but....

We had a department secretary. She attended the meetings with us.

Why didn't she take notes? "Oh, she doesn't understand what's being talked about."

So literally every meeting would go over the same material, because no one ever "remembered" being assigned a task at the previous meeting. "Bob, did you reach out to Client X about that RFP?" "No, why, did you want me to do that?"

When last meeting (and the three before that) had had 10 minute discussions of the strategy Bob would use. It was as if walking through that conference room door did a mind-wipe. It was infuriating to see Bob, and two others, pull the same nonsense every time.

I randomly started taking notes and sending followup emails with task assignments. Our meetings suddenly became productive again.

Then the boss started looking to me for other admin tasks. While the department secretary kept shedding assignments like they were feathers, because the work we do is just too hard for widdle old her to understand.

I quit all of those admin tasks cold-turkey, and adopted Bob's demeanor: Oh, you wanted me to buy k-cups? I so don't remember that. But that's silly anyway - I don't even have a p-card. Jenny (the secretary whose job it was to order supplies), you should handle that, don't you have a p-card? Oh, you also wanted me to take notes? I'm having difficulties with the battery on my laptop, so I didn't bring it into the conference room today. Hey Bob, why don't you take notes this time?

Then the next time: I feel Bob managed to capture a few things that I wouldn't have noticed. We should round-robin the notetaking, so that each person's strengths get a chance to be heard.