CHICAGO — Once Caleb Williams and the Bears’ offense found their rhythm, they started stringing together the sort of possessions the team and its fans envision on a regular basis.Williams led four scoring drives, D’Andre Swift had 165 yards from scrimmage and a touchdown, and Chicago held off the Los Angeles Rams 24-18 on Sunday.The Bears (2-2) scored touchdowns on back-to-back possessions in the second half after struggling early. Jaquan Brisker intercepted Matthew Stafford with about a minute remaining following a punt on the previous play.Williams threw for 157 yards and a touchdown after setting a Bears rookie record by passing for 363 yards on 52 attempts in a loss at Indianapolis last week. He said this performance was a step forward.The No. 1 overall draft pick and former Heisman Trophy winner out of Southern California was 17 of 23 with a 9-yard TD pass to DJ Moore in the third quarter. He did not have a turnover, coming off a game in which he got picked off twice and lost a fumble.“Obviously when you don’t have two turnovers, that’s the most important thing,” Williams said. “When you have a defense like us, you have a punter and a kicker like we have, you’re not turning the ball over, it goes a long way. You’re going to win a lot of games.”Swift had his best game since signing with the Bears in March. A Pro Bowler with Philadelphia last season, he broke off a 36-yard touchdown run that made it 24-15 in the fourth quarter. He finished with 16 rushes for 93 yards and seven catches for 72 yards.Roschon Johnson ran for a 1-yard touchdown in the second quarter following a strip-sack by Montez Sweat deep in Los Angeles territory, and Chicago finished with 1 …