Facebook pages can be connected to broadcasters under the Communications tab. There are a couple of ways to help differentiate how folks interact with each broadcaster.

Under Communications > your broadcaster > Settings > Facebook > You can tag folks that interact with this particular Facebook page and you can also add folks to a path. 

Using different tags and paths will help create stronger filters.

When using filters, there are a few criteria specifically involving Facebook allowing you to highlight which broadcaster someone has interacted with. Try using these filter criteria combined with the additional paths and tags criteria.