‘“It’s a big part of it, at least for us,” Terrance Gray, the Bills’ assistant director of player personnel, said after Wednesday’s practices in Mobile. “When you draft them, they come into your building and you’re adding them to your culture. So it is a big part of what we do, sitting down in one-on-one interaction. It’s not always all football. We want to get to know the individual, their background, what makes them tick, what motivates them. Obviously, you get to some football elements. You try to find out their football IQ, how well they understand the game.”’