I understand there are aspects where the CUAD alone has fallen well short that have hindered the football program, but CUAD and CU Football specifically have shown year after year they are net positive or net neutral at worst from a revenue standpoint, and that's when they have been really ****ty on the field. It's not a hard concept to grasp that the "parent company" investing resources into one of their most visible subsidiaries is the right move in order to see long term growth of said subsidiary.
So how do you get buy-in from the school? Become a better athletic department by making more money. How do you become a better athletic department and make more money? In part, by getting the school to increase their support by removing barriers to entry for top athletes, agreeing to a robust recruiting department, approving competitive contracts for top coaches, ensuring the program doesn't have to go an extra year with an awful staff losing even more money, etc. Once CUAD isn't trying to operate with both hands tied behind their back, relative to their peer institutions, the conversation can be had about who is leading the AD and why the football program isn't bringing in enough money to tell the school to STFU.
TL/DR... Until the school decides it wants the football program to be successful, it doesn't matter who is running the AD. It goes hand in hand.