Some notes may have a 1:∞ relationship

Some of my notes have a 1:∞ relationship, that is, a single note taken during an exec review may cover multiple projects. Is there a way to show a single note in more than one project?

One way you might do this is to put a particular tag in each note (eg #specialmeeting), and then do a search all for that tag, and save it as an overview. That way any note that has the tag will automatically appear in that overview.