LONDON — The Chicago Bears can’t expect to spot a team 17 points and win.

Not with their offense.

The stormed back from a 17-0 halftime deficit to take a lead into the fourth quarter, but Chicago ran out of gas at the end and allowed the Oakland Raiders to squeeze out a 24-21 victory.

The lack of urgency the displayed in the opening 30 minutes was alarming. The were still jet-lagged from Friday morning’s touchdown at Heathrow Airport, or disinterested, or maybe both, because that effort did not resemble a playoff team.

Chicago had visions of entering the bye at 4-1. That’s over. The will now spend the next two weeks piecing together what went wrong, particularly on offense, where the managed only 236 total yards and 42 rushing yards.

Monday’s transcontinental flight back to Chicago just got extra uncomfortable.

QB Breakdown: Chase Daniel looked like a backup early and late. In between, he fared pretty well, tossing a pair of touchdown passes to Allen Robinson. But Daniel had an inexcusable first-half interception to Raiders linebacker Nicholas Morrow on a poorly thrown ball over the middle that set up an touchdown. That just can’t happen. Daniel roared back to life after halftime, but floated another bad pick near the end of the game. You can’t pin the loss on Daniel, but he definitely would like to have a couple throws back.

Pivotal play: Lifeless throughout the first two quarters, the received a much-needed spark after halftime when the Raiders quarterback Derek Carr and rookie running back Josh Jacobs botched a pitch attempt and the recovered deep inside territory. With a short field, the finally cashed in on a David Montgomery 1-yard touchdown run that shifted momentum back in Chicago’s favor. The later received huge lifts from Tarik Cohen (71-yard punt return), Anthony Miller (32-yard catch), Sherrick McManis (forced fumble inside the 1-yard line) and Robinson, but the momentum swung on that turnover. The failed to sustain that momentum, but without that fumble the game is probably a blowout.

Describe the game in two words: Pure rubbish. The can’t afford to lose games like this. Yes, the international travel is a hassle. But Hotspur Stadium was packed with fans. Sunday was technically a home game for the Raiders, but it sure didn’t feel like it. There were fans everywhere, and they were loud — when the gave them something to cheer about. It was a wasted opportunity.

Silver lining: The have extra time to get players back after the bye week. Not only did Chicago miss quarterback Mitchell Trubisky and wide receiver Taylor Gabriel in Week 5, but defensive lineman left early with a left elbow injury. And kicker Eddy Pineiro appeared to re-aggravate his right knee injury, but he stayed in the game.