It is my understanding that if you go to gnome settings / search settings you can choose search providers for things that ought to be found by the search in the gnome activities overview. One of these search providers is for the calendar. Even though the switch for the search provider for the calendar is turned on in my gnome search settings, no calendar event matching the search term has ever got found/shown in the search results.
So, does this work for anyone, or am I misunderstanding a feature here?