Hi,
A family member seems to have the same issue you are describing, started late 2022, late November, early December, 2022.
it’s hard to describe but it sounds the same.
iPhone 11 Pro Max on iOS 16.2
In the Phone app, under Recents, there are 2 contacts who called displayed on the same line, instead of 1 per line as per normal.
Either 2 different names/contacts or if someone called twice, the same contact twice.
They appear as ‘Contact 1 & Contact 2’ on the same line example ‘Tim & Fish and chip shop’.
If you touch the i symbol it goes to another screen with the contacts name on different lines with the i on the far right.
I tried touching on one of the lines with 2 different contacts then quickly hung up as it seemed to go to a dialling screen dialling 2 contacts at the same time.
Ive looked in Settings, Phone and also Contacts but can’t see any setting that might be doing that.
Seems it’s not just me