CiviCRM Community Forums (archive)

I've been asked if we can find out which of the participants at one meeting have attended another (we had a conference a few months ago, and the speakers at our upcoming event would like to know how many of their audience have already heard them at the prior event).

I tried in Search Builder, but got no result, although I can see in several records that there are some people who meet the criteria (and the returned search reads properly as participant at event1 and participant at event2).

So then I tried in Advanced Search (because for once I'm not doing a NOT) but that only allows me to select a single event.