When the best interests of a program/team are the same as the best interests of a family in a father/son coaching relationship, it can be a magical thing. Just look at Doug McDermott at Creighton, AJ Green at UNI, and Tucker Devries at Drake. All were legendary players playing for their dad, unquestioned best players on their teams.
Unfortunately Iowa got the complete opposite experience with Brian Ferentz (coaching) and the McCaffrey’s. And when the Iowa coaches had to decide between the best interests of their family and the program, well we know they picked their families. And it hurt Iowa immensely.