Controversy at Twickenham after 12-6 defeat
Warren Gatland was left fuming with the TMO (Televised Match Official) after Wales were not awarded a first-half try in Saturday's 12-6 defeat by England.
Jonny May scored two tries in the opening 20 minutes to send the reigning Six Nations champions on their way to victory, but Gatland's side dug in to claw their way back into the Test.
Gareth Anscombe handed the visitors a lifeline when he crossed the line with his side trailing 12-0, and moments after May's second try, but TV match official Glenn Newman controversially ruled out the score.
Anscombe appeared to reach the ball and apply downward pressure before England wing Anthony Watson but Newman disagreed, and Gatland believed the decision may have cost Wales victory.
"It looked like a try to me," Wales head coach Gatland said. "It is disappointing that you get that decision wrong.
"It is a pivotal moment in the game. The TMO has one big call to make and he has made a terrible mistake. At this level it is pretty disappointing. Not to be given what we thought was a legitimate try was a massive moment.
"I struggled with the wording [from the TMO]. He said that England got there first and there was no downward pressure from Wales. I saw that differently.
Eddie Jones was thrilled with the doggedness England showed in their 12-6 Six Nations win over Wales.
"There was clearly downward pressure, and at this level, in front of 82,000 people, when there is a lot at stake, you have to get those decisions right."
Asked if he will issue a formal complaint about the decision, Gatland added: "I will just get clarity. You cannot do anything about it. It is a decision that has gone against us."
England head coach Eddie Jones - who oversaw his side's second win in as many weeks as they bid to win the championship for a third consecutive year - had no complaints with the verdict.
"I have never made a comment on a TMO," Jones said. "It was one part of the game that has done really well in rugby.
"We have a guy up there that is a referee. He has got time to make a decision, and if he can't make the right decision then what do we do? I allow him to make the decisions. He made the decision and we get on with it."
Wales captain Alun Wyn Jones says they won't use the controversial video referee decision as motivation for the rest of the competition.
Jones thinks they need to forget about it.
"I think it's more the frustration it's not even the man in the middle, it's the man in the stand, with all the technology available.
"We'd like to think there is enough time to get the decision right.
"I don't know about motivation because of a third or fourth party decision.
Wales sit third in the table after Saturday's match
They take on Ireland next.