On Instagram, 'Unlink Account' Won't Unlink a Facebook Account
Facebook knows so much about its users that it can link their accounts, even when created under different names, from different devices.
28 Aug 2019 ... The settings on Instagram include a page devoted to the “Linked ... Linked Accounts menu on Instagram, the option to link your Facebook profile is ... Even in cases where a different name, email address, or device was used to ...