Congrats on the interest and some very good questions. Where did the D1 interest like him?
One thing that comes to mind instantly for me is the QB correlation. I personally thing this is a great connection. Yes, catching skills and knowledge of the position take time to fully develop. But I have had the hardest time getting catchers to grasp the leadership, seeing the whole field, total game awareness aspects much more so than teaching a strong athletic kid proper catching mechanics. Also, an athletic QB with football mentality will likely pick up on drop-n-block, quick feet, quick release and other important aspects of catching much more quickly than others. Love it. And, if he can play corners AND catch well on top of his size and big bat, that's a pretty valuable package he has to offer.