Deion and Romo hate each other for different reasons.
Prime is a HOFer, with 2 rings, multiple All-Pros and is widely considered among the best ever in the NCAA and NFL. Dude was a legit baseball player and damn near won a World Series ring. However even with all that Tony is already a better announcer than Deion will ever be. Tony got close to the Jones family and is making connections....breh is gonna be like Roger Staubach moneywise with John Madden video games. Deion thought he was in good, but is now realizing there are layers to this shyt. Tony is being treated like a son while Deion got that second cousin treatment.
Tony hates Deion because no matter what he does, Deion will have the rings and accomplishments that Tony always wanted. Deion was a hard worker but Tony probably thinks Prime just coasted because of his 4.2-40yd dash. Deion put in work but his talent allowed him to make extremely gifted people look ordinary as fukk. They both have what the other wants.