Im sure he did know him before they bought Union together. He is also the Chairman. They also say the clubs have no connection with each other. I'm sure we have a slight advantage over other clubs if we wanted to buy a player from them, but we won't get it for free and im sure they wouldn't take a player of us because we tell them too. They are two seperate clubs/
I'm not entirely sure why you imagine the clubs are so separate that BHA won't have the upper hand when it comes to player movement. Even the late Hercule Poirot can see that we are the senior partner in this totally separate relationship