Proof of stalking?
Annie used to have a lot of interaction with Bob for a while. Then no interaction for 4 years, in fact Annie has blocked Bob and deleted his number from her contacts.
Now Annie has some interaction with Carl's account. Carl has no common interests with Bob, they live in different cities, have never met, the only connection is that Carl is following Annie, who has blocked Bob.
Carl is constantly being recommended to follow Bob. Annie has lots of other interactions with Insta users, many of whom share common interests with Carl. They are not being recommended.
Is there a benign explanation for this? One that doesn't imply that Bob is stalking Annie?