Bill O’Brien has had quite the football journey spanning over multiple levels. Between the NFL and different levels of college, O’Brien has been around the block. His latest stop is at Boston College, where he takes over as the head coach after being an assistant for quite some time. At ACC Media Days, somebody asked O’Brien how his NFL past helps him in college. He pointed toward working with so many great coaches and players — both in the NFL and in college — is why the success has followed him. “I’ve been fortunate,” O’Brien said. “I’ve had the opportunity to work with a number of great coa…