So far, it seems to be the moment that is threatening to define Wales' Six Nations campaign.
The 12-6 defeat to England might have been so different had Gareth Anscombe's try not been disallowed by the television match official with the score at 12-0 to the hosts.
Glenn Newman decided there wasn't sufficient evidence that the ball had been grounded under control, despite TV coverage showing it should have stood.
While Warren Gatland's men came away from Twickenham with a bonus point, that was little consolation for what could prove a vital defeat against the tournament favourites.
The debate has raged on about whether Anscombe was robbed of his moment, but backs coach Rob Howley has now confirmed that the TMO made an error.
Wales staff, including Gatland, spoke to World Rugby officials, who formally apologised for the mistake.
"It was good to have dialogue with World Rugby over the weekend,” Howley said, per WalesOnline.
Wales hugely disappointed
“Referees have meetings and that phone call took place yesterday and Alain Rolland confirmed, on behalf of World Rugby, that they made a mistake.
“It’s happened. It’s disappointing that it happens in professional sport but we focus on the next two weeks and getting ourselves ready for Ireland.”
Howley did concede that the Dragons still had plenty of time to get back into the game, with the incident taking place with 23 minutes on the clock.
“There was plenty of time left after that decision,” he added.
“We obviously had a couple of opportunities that we should have taken. From our perspective, in the first half, there was no rhythm to our game like we had against Scotland.
“The conditions improved in the second half and the way we reacted from 12-0 down to get back into the game was good. At 12-6 it’s anyone’s game and we showed intent, ambition but we’ve come up short.
“It’s a shame, in the first 25 minutes of the game, England squeezed us from a kicking perspective. We always talk about winning the aerial battle and we lost out in the department that has been a strength of ours in recent years.”
That should put the matter to bed, for now - but ultimately it's bound to crop up again if it has a bearing on Wales' Six Nations fortunes.
Do you think the decision will affect the outcome of the Six Nations? Have your say in the comments.