Same. Split loyalty is not a thing, period.
I have never understood how anyone can say they have more than one favorite team in any given sport.
I am a Brewers fan, and dislike all other teams, no matter what. Some I dislike more than others, but to me, they are all the enemy.
I won't go into who my NFL team is, and has always been (give you a hint, they came into existence in 1976 lol, and I've been a HUGE fan since)