Denver Broncos quarterback Brock Osweiler (17) gives a thumbs up before an NFL game against the Kansas City Chiefs, in Kansas City, Mo., Oct. 30, 2017. Osweiler was named the starter following Denver's loss to the Chiefs.

Ed Zurga/AP

The Denver Broncos are excited over Brock Osweiler's promotion. But they realize it's going to take more than a quarterback switch to salvage their season. Teammates and coaches say they could have done more to help Trevor Siemian before he paid the price for their slide with his starting job.

Coach Vance Joseph had stuck by Siemian's side for as long as he could — but the team has struggled mightily on offense.

Vic Vela speaks with Denver Post sports report Nick Kosmider about the change under center for the Broncos and where they go for the rest of the year.

Read More: Brock Osweiler’s 2015 Big-Game Success Gives Broncos Teammates Faith In New QB (via The Denver Post)

The Associate Press contributed to this report.