Bill is an all time great coach. All intelligent fans would agree. When we say Belichick is GOAT we’re saying BB is a greater coach hands down than every other all time great coach like Lombardi, Landry, Noll, Brown, Walsh, Gibbs, Shula and the rest of them. Is he? I’d like to think so only because I’m a Patriots fan. How do we know that he is? There are arguments for and against. The only thing BB has clearly in his favor is rings and he had the built in advantage of having the greatest QB who ever lived on his roster.