Contacts Linked Accounts

I noticed on some of my contacts which aren’t using Monzo I can add another account if they have multiple bank accounts and they show under linked accounts.

Is it possible to do this for contacts who are using Monzo too as I can’t see the option to add bank account?

Basically under the contact I want to be able to send to their Monzo or they other bank. Instead of having multiplies entries for the same contact?


Edit: I’ve just been through my contacts and some I can add bank details to and some I can’t, I’m not sure why, maybe someone else knows?

Actually, it looks like only people I have sent money to (looks like not people I have just received from) that I can add bank details to , which is weird