Waratahs coach Waratahs coach Michael Cheika has accused Super Rugby referees of making the game soft by penalising players for making hard but legal tackles.
Australian Rugby referee Steve Walsh watched a replay of a tackle by Waratahs hooker John Ulugia before issuing him with a yellow card for a chest-high tackle on Reds winger Rod Davies, which left Cheika fuming.
The Waratahs coach compared Walsh's decision to umpire Aleem Dar's mistake in the first Ashes test on Friday when the Pakistani turned down Australia's appeal for a catch against England's Stuart Broad despite the batsman clearly getting an edge.
"Everyone saw it. I don't know if it was Aleem Dar proportions, but it was pretty crooked," Cheika told Reuters after the Waratahs lost 14-12 to their traditional rivals.
"He had a second look as well. It was interesting listening to the third umpire, the TMO. He was saying: 'Do you want me to comment, Steve?'
"And he said: 'No, no, no. I'll have another look.' So he didn't want him to comment obviously.
"But I think everyone saw he put his arms around him. I don't know whether they should have had a kiss or not while they were in there."
Cheika has blamed the match officials for softening up the game of rugby union.
"It's a shame because hardness is going out of the game," he added.
"There's nothing illegal about it. It's a good, hard tackle and that's what we try to get guys to do at training.
"Then in a game, as soon as someone puts in a good shot on, everyone panics. Like, 'give him the sin bin'.
"I don't know, touch footy next year maybe."