What are the motifs in Patriot Reign by Michael Holley?

Belichick's logic-based management style is contrasted with Parcell's emotional style. Belichick works for Parcells long enough that he becomes identified with him and later has to work to differentiate himself. There is an anticlimactic moment where the two head coaches face off: student (Belichick) versus master (Parcells). Belichick's team wins and Parcells is gracious; they hug after the game