Wes Welker made a limited return to practice on Thursday, while Champ Bailey and Duke Ihenacho were again sidelined.
Orlando Franklin, Manny Ramirez, Julius Thomas, and Joel Dreessen were again limited.
Jack Del Rio spoke in the morning with John Fox, who he describes as "a little tired," but in good spirits.
According to Joan Niesen, linebackers coach Richard Smith, formerly a DC for Miami and Houston, has taken on a greater workload with the defense in Fox's absence.
For San Diego, LB Donald Butler was upgraded to a full participant, LB Jarret Johnson and Chad Rinehart were limited, while WR Eddie Royal and T Mike Remmers did not practice.
DE Lawrence Guy, who had been limited on Wednesday, did not participate on Thursday.
A Denver victory on Sunday would set a new franchise record with seven consecutive division road wins.
Mike McCoy figures his familiarity with Denver's offense and personnel should help his team's chances.
Benjamin Hochman consults PFF's grades to find which Broncos can improve in the second half.
Jim Nantz and Phil Simms will call Sunday's game. Ugh.