Chiefs running back Jamaal Charles gazed up at the big screen at Ralph Wilson Stadium last Sunday and got the attention of Eric Bieniemy.

“Did you see that run?” Charles asked Bieniemy, his position coach.

The replay didn’t feature Charles or anybody else in the Chiefs’ 23-13 victory at Buffalo. The player and coach were watching in amazement as Minnesota’s Adrian Peterson lugged several Dallas Cowboys into the end zone, and at that moment, nobody in the NFL could have felt a greater sense of pride than Bieniemy.

Peterson’s position coach for his first five years with the Vikings was Bieniemy. The two actually go back further to Bieniemy’s days as an assistant coach at Colorado, where he started recruiting Peterson, a Texas high school phenom.

Bieniemy left the Vikings after the 2010 season but remains close with Peterson, staying in communication with him during the tragic circumstances of his son’s deathlast month.

“We’ve found time to stay in contact,” Bieniemy said.

As Peterson was turning in one of the most memorable moments of the weekend, Charles was doing his usual remarkable thing in Buffalo, on his way to accounting for about 46 percent of the Chiefs’ total yards in the team’s ninth straight victory.

Charles leads the Chiefs in rushing (an AFC-best 725 yards) and receiving (389), accounting for an eye-popping 39 percent of his team’s offense.

Peterson and Charles are at the top of their games, and Bieniemy, in his first season with the Chiefs after spending the last two years at his alma mater, Colorado, has seen them at their best.

“They’re different backs, but the one constant between them is how competitive they are,” Bieniemy said. “The desire to be great in everything they do, that’s what makes them special.”

After watching the Peterson clip, Bieniemy thought, “That’s the angry man, he’s back.”

With Charles, Bieniemy sees the same determination in different aspects of his game.

“What Jamaal brings is he’s very well-rounded,” Bieniemy said. “He does a lot in the running game, a lot in the passing game and does a great job in pass protection.”