system
Given the following post, respond as if you're commenting on Reddit:
human
LinkedIn finds my new stranger flatmates in its suggested connections algorithm. How?

Dear all,

Could someone explain this to me:

Last year I moved in to a rented apartment with totally random people who also found the flat on a housing ads website - we were total strangers. After a few weeks I managed to pop up on their suggested LinkedIn connections window. Neither of us searched for each other - it just happened (seemingly?) randomly.  

Today this just happened to me again - about 3 weeks ago I moved in to a new flat occupied by a total stranger and today she cropped up on my suggested LinkedIn connections window - I recognized her from a profile picture. Once again, I told her this and she is 100% certain she did not search me on LinkedIn; she cannot even spell my foreign name. I did not search for her either.

Is this just a very rare coincidence, or am I missing something in my online behaviour that enabled LinkedIn to indicate flatmates as suggested connections?

Please explain! Thanks!
gpt
LinkedIn could be doing a check on which IP address you are coming from and assumr that you know each other if you are the only two people using that address on a regular basis.

*edit: changed "they" to "linkedin"