In fact, they can do a lot more since they have data on more than two people.
Seriously, they know every time you pick up your phone. Where you shop, how much you spend, if you miss a stop in the highway, if you text your parents happy birthday, if your heart rate increases when you’re around a particular phone. They quite literally may know your gay before you do.
I wish that was pure /s, but the amount of "Ask HN: Google banned me or my business for no obvious reason" is really staggering. (n.b.: Of course I'm talking about the old Google of 2022, not about the glorious overlords that Google since has become; all praises the holy trinity of Android, Google Search and Google Glurp for Glorps! Please don't ban me.)