By Evan Bleier Potentially on the verge of making history by having the first Black owner in the history of the NFL, the Denver Broncos could be close to making another groundbreaking move or two after hiring Green Bay Packers offensive coordinator Nathaniel Hackett to be their head coach. Hackett, who got the best out of flawed quarterback Blake Bortles as Jacksonville’s offensive coordinator from 2016 to ’18 before heading to Green Bay and helping Matt LaFleur win a record 39 games in his first three seasons as head coach of the Packers, replaces defensive-minded Vic Fangio and will take ove…