Fleener was on the receiving end of a bone-crushing hit in the fourth quarter.
While Fleener’s status was not announced in the press box, Fleener suffered a concussion, a source confirmed after the game.
Fleener finished the game with one catch for 8 yards on two targets.
Armstead went down in the third quarter and was taken to the sideline, where the medical staff evaluated him in the trainer’s tent.
The team’s starting left tackle later emerged from the tent and rode the stationary bike.