"We've gotten comfortable being uncomfortable," Detroit coach Caldwell said. "They feel like that's the norm."
"I saw the quarterback staring and knew I just had to catch the ball," Bush said.
Keenum finished 27 of 32 for 321 yards with three touchdowns - two to Kenny Britt, one to Kendricks - and an interception.
"We did some good things offensively, but unfortunately we were a couple plays short," Keenum said. "It sounds like a broken record from last week."
Britt had season highs with seven receptions and 136 yards, 47 of which came on a highlight-reel catch.
Todd Gurley gained 15 yards on his first carry, but finished with just 58 yards on 14 rushes as another team figured out how to slow him down. At the end of the first half, Gurley was stopped for a loss of 1 on a fourth down from the Detroit 1 with the score tied at 14.
"I'd do it again," Rams coach Jeff Fisher said. "We're inside the 1. Shoot, you've got to bang that in."
Gurley did have four receptions for 49 yards.
Copyright 2016 by The Associated Press