Linked user accounts - refresh of secondary identities

Hi - let’s assume a user has linked a google account to their original username/password account, and using a SPA frontend.

Q1: Would the SPA client hit the refresh token endpoint only for the primary identity? (ie un/pw)
Q2: If the google account admin deletes user/email of the second id, how does the second id get invalidated, or potentially unlinked, from the main id?