The tenure of Sean McDermott as head coach and the appropriate "leash" to allow him to lead this team to the Super Bowl has been a topic of considerable debate on this forum. While there's a consensus that he deserves additional time, the crux of the argument lies in determining the precise length of this leash.   To shed light on this, I conducted a simple data study, examining the trajectory of every NFL head coach who has led their team to the Super Bowl (not necessarily winning, ju