GREEN BAY, Wis. -- Walk down the hallway of Lambeau Field's third floor, where the Green Bay Packers coaches work, and one thing quickly becomes apparent: The doors are always open.
James Campen, who coaches the offensive line, might be in running back coach Ben Sirmans' office to discuss the blocking schemes on a run play. Cornerbacks coach Joe Whitt could be found in outside linebackers coach Winston Moss' office to talk about marrying coverages to zone blitzes.
There's cross-pollination as well. Defensive coaches will pick the brains of the offensive staff. And vice versa.