Michael McDowell was the surprise Daytona 500 winner and then Bell earned an earlier-than-expected first trip to victory lane.
The 26-year-old Oklahoman is a longtime Toyota development driver who won 16 Xfinity Series races driving for Gibbs.
Ty Gibbs, the 18-year-old grandson of team owner Joe Gibbs, won the Xfinity Series race Saturday night in his first career national series start.
Kevin Harvick finished sixth and AJ Allmendinger, in his first Cup race since the 2018 season finale, finished seventh.
It was the highest finish in three Cup races for Kaulig Racing, an Xfinity Series team formed in 2016 that wants to be full-time Cup next season.