Trestman, Kromer working well together

Marc Trestman has the final say when it comes to offensive play calling, but offensive coordinator/offensive line coach Aaron Kromer is a major contributor, especially when it comes to the run game.

“Basically, we work together to make the play selections,” Trestman said. “It's like a 51 percent rule in what goes into Jay (Cutler). “We're actively communicating through the week. We have a plan going in. We talk about how we want to coach the game, how we want to attack, the use of the run and the pass.

“My focus is more on the passing game, and Aaron is on the running game because it's such a highly specialized environment now. That's the way it is throughout the league for the most part; coaches are working together in community to make final decisions as to what play goes in, and Aaron is certainly a big part of that, as is the rest of the staff.”

Trestman's relationship with Kromer goes back more than a decade, when they worked together on the Oakland Raiders' staff from 2001-03. Trestman was the offensive coordinator/quarterbacks coach the last two years, while Kromer worked with the offensive line.

“Aaron is a extremely experienced,” Trestman said. “He's been in a number of different organization now since we were together. He's been in Tampa and New Orleans with Sean (Payton). He's actively grown as a coach and (in) his understanding of the game, (since) he was a young coach 12 years ago in Oakland, being trained by (head coach) Bill Callahan.”

As a rookie head coach in 2002, Callahan and his staff got the Raiders to Super Bowl XXXVII, where they lost to the Bucs. The Raiders' gig was Kromer's first in the NFL after two years as Northwestern's offensive line coach.

“I think we work well together,” Trestman said. “We have a great sense for give and take, and I think he's doing a tremendous job coaching our (other) coaches on our offensive as well and leading our offense.”

Just another game:

Prime time? National stage? Everyone watching?

None of it matters to coach Marc Trestman heading into Sunday's night game against the Steelers.

“That's the last thing,” the Bears' coach said he's thinking about. “Honestly, my focus has been consistent, and I truly believe in it. It's just to create the environment daily for our guys to succeed, and I'm not going there.

“I know the questions are going to be asked, but I'm giving you a straight answer, that there is no consideration of any of that going in. It's just to do whatever we can to be at our best and have our team be at our best.”

Injury update:

Cornerback Charles Tillman was limited at Friday's practice and is questionable for Sunday.

“We'll leave it up to Charles and our trainers to see where he is,” coach Marc Trestman said. “We're optimistic, but we don't know right now.”

Wide receiver Brandon Marshall (back), tight end Martellus Bennett (shoulder) and guard Kyle Long are all probable, and all three were full participants in Friday's practice outside at Halas Hall.

Steelers rookie running back Le'Veon Bell (foot) is questionable after a full practice, but he has not played this season and might be a week away. Pro Bowl tight end Heath Miller (knee), who also has not played this season, is probable after a full practice.

By the numbers:

Since 1979 the Bears have started 2-0 12 times. In 10 of those seasons they finished with at least 11 wins and eight times ended up as division champions. ... According to the Elias Sports Bureau, this is only the second time in franchise history that the Bears have won the first two games of the season when trailing both in the fourth quarter. The other time was in 1971. ... The Bears are tied with four other teams for second in the NFL with 6 takeaways, trailing only the Seahawks (7). ... Cornerback Tim Jennings' 44-yard interception return for a TD last week was the Bears' 27th since 2004, the most in the NFL. ... By hitting both of his field-goal attempts this season, Robbie Gould has become the third-most-accurate kicker in league history at 85.7 percent. Gould is now ahead of the Titans' Rob Bironas, who has converted 4 of 5 attempts, dipping to 85.5 percent.