"Khalil Mack Watch" continued Thursday at Halas Hall with curious reporters wondering how the Bears defense might respond if Mack's injured right ankle keeps him out of Sunday's game against the Patriots or significantly limits him.
"I don't know the situation," linebacker Danny Trevathan said. "But I know that if he's ready to go, he's going to go. And I know the defense is going to be prepared either way to win another game. We're going to step it up anyway.
"He's going to handle his business. He's a pro. He's one of the best at it. And we have to keep moving. He knows that. We know that. The defense has to get this win."
Mack missed practice for the second consecutive day Thursday.
Still, even with coach Matt Nagy saying Mack's health situation is a "day-to-day" deal, there's an internal optimism that the outside linebacker will be able to play.
Mack never has missed a regular-season game in his NFL career, a streak of 69 games that he hopes to keep going with the Patriots visiting Soldier Field on Sunday.
Fangio was asked before Thursday's practice whether Mack would have a chance to play even if he wasn't able to practice during the week.
Said Fangio: "Not having been around him for a whole lot of time, I don't really know the answer to that. But I think so."
Wide receiver Allen Robinson also missed practice Thursday with a groin injury. Nagy said Robinson felt the injury during Sunday's game against the Dolphins and that the Bears were being cautious. Cornerbacks Prince Amukamara and Marcus Cooper, who have hamstring injuries, and offensive lineman Eric Kush (neck) were limited.
"(Amukamara) looked good, and for us that's important," Nagy said. "He's a great player for us. He's a leader and has experience, so we were glad to see that."