ENGLEWOOD, Colo. — After suffering a concussion in the Broncos' Week 4 loss to the Ravens, Teddy Bridgewater returned to meetings and the weight room on Wednesday.

Head Coach Vic Fangio said Bridgewater was permitted to watch film, and he noted that the quarterback lifted weights on Wednesday.

Bridgewater was not permitted to partake in those activities when the Broncos were at UCHealth Training Center on Monday.

"He's getting better," Fangio said Wednesday.

Bridgewater will not practice on Wednesday, but Fangio said it's possible he could be a limited participant on Thursday.

Bridgewater cannot play Sunday against the Steelers unless he is cleared from the protocol.

Wide receiver Diontae Spencer (chest), cornerback Pat Surtain II (chest) and running back Melvin Gordon III (lower leg) are also not expected to practice on Wednesday.

Fangio said he's "pretty confident" Gordon will play Sunday, and Spencer and Surtain remain day to day.

Outside linebacker Andre Mintze (hamstring), guards Graham Glasgow (knee) and Dalton Risner (ankle) and linebacker Baron Browning (back) were expected to practice on a limited basis on Wednesday. All four players missed Sunday's game against the Ravens.

Fangio said he also expects cornerback Ronald Darby to practice this week and that it's possible Darby could return from injured reserve to play this weekend in Pittsburgh. It's also possible that the team could activate running back Mike Boone from IR.

UPDATE [4:53 p.m. MT]: The following players did not practice: Teddy Bridgewater (concussions), Melvin Gordon III (lower leg), Bobby Massie (not injury related - rest), Diontae Spencer (chest), Pat Surtain II (chest). The following players were limited: Baron Browning (back), Graham Glasgow (knee), Von Miller (not injury related - rest), Andre Mintze (hamstring), Albert Okwuegbunam (hamstring).