I cannot say that I am surprised.
Many head coaches have had their sons coach on their teams.
I don't know if there have been cases of fathers working for their sons?
If I'm a young and new HC
The last thing I feel I would want would to have my father coaching on my team
Close or not close to my father
If I was having a successful season, I wouldn't want people saying it was due to having a father coaching on the team who was known as a successful coach.
And him being the reason for the success of the team
Maybe it's okay, just not what I would want
As a HC I would want the best of the best and if having my dad as the OL coach helps the team then maybe
