England are set to learn if they will be fined for challenging New Zealand's haka by forming a V formation during the ceremonial dance.
World Rugby rules dictate that teams standing across from the haka are not permitted to cross the halfway line. France launched a similar response ahead of the 2011 Final against the All Blacks and were later fined £2,500.
Joe Marler was on the wrong side of the white paint ahead of Saturday's Rugby World Cup semi-final and was asked by referee Nigel Owens to retreat.
The 29-year-old, who was one of a handful of England players in the wrong half, refused to step back.
World Rugby are set to discuss the issue on Monday.
The act of resistance was devised by Eddie Jones and while England knew it could backfire, Mako Vunipola said afterwards it was vital to serve notice to a team that has not lost a World Cup match since 2007.
"We wanted to be respectful but we wanted to also make sure that they understood that we would be ready for the fight," Vunipola said.
"We just knew that we had to back it up. There have been a few times in the past when the All Blacks have had that done to them but then blown the opposition away.
"We put accountability on ourselves to back it up and I thought we did. We knew it would rile them up, it probably felt like we disrespected them.
"We meant no offence by it, we just wanted to let them know that we were ready for the challenge ahead. And they let us know in the first couple of contacts.
"It was a ferocious contest, which is what you expect. I'm just very proud and happy for the boys."
