One thing that FB doesn’t tell you in its listings about what they know about you, is that each and every website keeps track of where you came from when you logged in and where you went to when you leave.
That I am aware of. And, as a result, in sticky situations I log over to a neutral site when leaving or entering a subject site ... only thing is I’ve never known how many generals back they go. I’m too lazy to do more than one.