Being as generous as possible and without other context, I would interpret that as a request for some background info you trust that they could use to catch up

Being as generous as possible and without other context, I would interpret that as a request for some background info you trust that they could use to catch up on those concepts in their own time without derailing the meeting by getting you to explain it. Especially if most others present probably already understand it. Or at least that is how I would've tried to convey it if I was your manager.