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It doesn't look like Gomez touches it from that last angle. The ball doesn't appear to change direction. And, considering the velocity of the strike, I find it hard to believe that he was able to make direct contact on the back of the ball without it changing direction.
Ultimately the debate is moot--goal was allowed and we came away with a point. But if we're going to have a debate, I'm saying Gomez got a touch. That's what he told Goff, at least.