Curious as far as that take on Dullaghan. I had the opposite impression. I think one of the issues, even with a couple recent coaches both programs had, was that kids in Indiana were not good enough to recruit. Having been around a couple seasons, at least one of them made that very clear while he was a coach at an FCS school. I know one of the coaches at IU was known to just not show up to meet players. Dullaghan was never shy about mentioning that, but I never had the impression he was not doing much to get his kids to go any where. There are some cases where coaches may shy away. Steve Holman was an absolute bust at MSU, and James Banks at Tennessee was only slightly better. Things like that will cloud opinions of college coaches.
EDIT: details missed. A couple things to support DD as well. he did start the Bishop Dullaghan camp long before off season camps were a thing; not just to improve talent, but it allowed college coaches to watch kids compete. The other point is that he did come from Purdue to coach at BD. Jim Young left for West Point, and Mrs. D said it's football or me, so he stayed in Indiana. I would say he had a pretty good idea what it took for kids to get to college.