This is a funny thing to think about. Imagine him screaming, Dad, Pass me the ball!
I wonder if it will happen anyway just as a muscle memory reflex. Honestly though, Ill be a little bit surprised if Bronny actually makes the final squad and gets real game time alongside his Dad LeBron.
Lol "goat"

This dude really loves himself and joking doesn't he, imagine "dad I am open" is being not ok, but "goat I am open" is ok somehow lol. I think Bron is the way to go, everyone calls him that anyway and he should probably get away with it when they are on the game together, sure calling your dad with his name is a little weird and maybe it will take a bit of a time, but I doubt it would be the first time they are on the same team.
Everyone thinks about NBA when they think about teams, but in reality there are other situations, these players do end up playing pick up games and such, I am sure they played on the same team before, and I am sure they worked at home about some plays together for nearly a decade, maybe more who knows but a decade seems reasonable. So I think the chemistry will be there, the strategy will be there, the connection will be there, it would be pretty good for little bronny to end up playing with his dad to get better.