I expect they (we) already are. I never formally linked my FB and IG accounts and don’t use FB itself anymore but IG always suggests me the people I left FB in

I expect they (we) already are. I never formally linked my FB and IG accounts and don’t use FB itself anymore but IG always suggests me the people I left FB in part to get away from! It’s obvious that it has linked the accounts internally. And if course they have my WhatsApp number from 2FA on the other sites.