Australia head coach Michael Cheika has revealed Matt Giteau gave him a "gobful" after the independent concussion consultant ruled the veteran inside centre couldn't continue playing in Saturday's Rugby World Cup Final.
Giteau came off second best while trying to tackle All Blacks lock Brodie Retallick midway through the first half of the final which the All Blacks won 34-17 at Twickenham.
The Wallabies playmaker ran off the field unassisted and appeared to have shaken off the symptoms but things didn't go according to plan as medical officials ruled him out on concussion grounds.
That was the second major setback for the Wallabies after lock Kane Douglas was also forced off the field earlier with a knee injury.
And Giteau vented his frustration and anger at his coach during half-time.
"He [Giteau] was not happy that he was ruled out of it," Cheika told the Sydney Morning Herald.
"They ruled him out within 30 seconds, I'm not sure how that one worked out, but that's the way they did it.
"The medical referee made that decision, that's how he interpreted the situation.
"Gits gave me a gobful at half-time as to why he was off.
"But our hands are tied, there's nothing we can do about it."