Honestly, this tracks. Obviously, at some point he had to have a daughter (Alex's mother) but to have such a cold reaction is kinda cruel. He completely ignored his kid AND his grandson FOR YEARS! And while he became a good soldier, he became, was and is a horrible father and grandfather. Maybe (and I hope) that now that Alex is in his life, maybe his cold heart will that a little bit and he can bond with his grandson, but I doubt it, but who knows?