I admire the dual meaning of the thread title.
Chase says it was unfortunate to be on the receiving end of a rare mistake from Busch. As the discussion here shows, it's not that rare.
I think this is one of those instances in which the instant snap judgment is more accurate than all of the rationalizing after. Your eyes didn't decieve you.
Jeff Gordon's reaction in the moment was:
"Not sure what that was all about from Kyle Busch. Don't know if he misjudged trying to side draft Chase Elliott, but...definitely turned him."
If there had been a misjudgment, that would have been it: a failed side draft.
@StandOnIt called attention to Busch's contact with Clint Bowyer earlier in the race. He got into Bowyer's left rear in the corner, then when he couldn't get past him on the low side, tried to loosen him up at the left rear quarter panel for another lap, including on the straight. There's nothing wrong with that, it's racing. But it didn't work, and he didn't make the pass. It's more reasonable to believe his reaction was to be more aggressive with Elliott and went too far than to believe he was trying to pull in behind him and missed by several feet.