Even Jeanty, the No. 6 pick of the draft, contributed to the demise.

Running across the middle, right to left, midway through the third quarter, Jeanty was hit in stride by Smith. But the ball bounced off Jeanty into the Mile High sky, and came down into the waiting arms of Broncos linebacker Dondrea Tillman for Smith’s 12th interception of the season.

Though not as physically painful as what starting guards Jackson Powers-Johnson and Dylan Parham suffered with ankle injuries that knocked them out of the game.

Or the bruised quad Smith incurred on a scramble on the first play of the fourth quarter (Smith was without three starting O-linemen as left tackle Kolton Miller continues to rehab an ankle injury).

Or the blow to the psyche of punter AJ Cole, who, after putting on a coffin corner clinic in the first half, had a punt blocked inside his own 15-yard line late in the third quarter (the Broncos’ resultant field goal proved to be the winning points).

Or, yes, to the mindset of kicker Daniel Carlson, who, a week after missing an extra-point attempt in a 30-29 overtime loss to the Jaguars, shanked a 48-yard field-goal attempt that would have tied the game with 4:26 to go.

The Raiders offense would not touch the ball again.

Then again, another quizzical-yet-telling part of the game was the Raiders not finishing the game with Kenny Pickett when Smith could barely move, even if Smith did get the Raiders in field-goal range for Carlson’s ill-fated attempt.

Though not as head-scratching as first-team All-Pro tight end Brock Bowers barely touching the ball at all.

Bowers, after last week’s Tour De Force of 12 catches for 127 yards and three touchdowns, was not targeted in the second half.

At his locker, Bowers dropped the word “frustrating” four times in 90 seconds, or, once more than he was targeted the entire game.

“Can’t get anything going and you try, try as hard as you can,” said Bowers, who had one catch for 31 yards. “Everybody’s trying as hard as they can and it isn’t happening. It’s weird.”

Weird, indeed. Still, Bowers believed.

“The score was always tight,” he said. “You always had a shot. All it took was to string a couple of plays together and we just didn’t end up doing that.”

The Raiders were too busy sabotaging themselves, while learning those painful lessons.