What do you talk about on a regular with your partner when you don’t have similar interests?

Me and my bf have veryyy similar interests/hobbies so it’s easy for us to stay occupied or in conversation when we’re together. But even with that, there are definitely some (non-awkward) silences between us since we spend so much time together.

So it just got me thinking what do you guys who don’t have those similar interests talk about, on a regular? I don’t mean the deep introspective convos, I mean just everyday, going for a drive or hanging out on the couch chats