Someone caught me after a talk last month. Not right after. Three weeks later, in a hallway. She didn't say "great talk." She repeated one line back to me, in her own words, and told me she'd used it in a meeting that morning.
That's the compliment I've started paying attention to. "You seemed so confident" fades by lunch. The line someone carries into their own week is the one that actually landed.
So I'm curious: what's a compliment after a talk that meant more to you than it probably looked like from the outside?