It wasn't without protest, but the NHL's concussion spotters were able to haul Connor McDavid off the bench to initiate mandated protocol after he slammed his mouth on the ice while tripping over the stick of Jared Spurgeon.
McDavid missed a brief two-man advantage, and subsequently the balance of the period, when he walked down the tunnel with six minutes and 28 seconds left in the middle frame.
He returned for the start of the third period.
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