Match officials have been accused of a "dereliction of duty" in Saracens' emphatic win over Harlequins after apparent foul play was ignored when it was highlighted by a television pundit.

But the TMO was heard telling the referee he did not want to explore the matter because Healey had spotted it.

Lewies had already received a yellow card during the first half of the game.

The alleged clear-out in Saturday's game saw the Harlequins captain slide on his knees into Saracens skipper Owen Farrell.

Television match official Stuart Terheege told referee Christophe Ridley on a microphone during the broadcast: "The problem I have now is that it looks like Austin has instigated it because we're late, so I don't want to talk about it, OK?"

Prof John Fairclough, of player welfare group Progressive Rugby, said the matter was hugely concerning.

"Whatever the reason, it is clear a decision has been taken to ignore foul, reckless or dangerous play because of concern that it had been highlighted by a pundit," Prof Fairclough added.

"This is hugely concerning and a clear dereliction of a match official's duty to ensure player safety.

"An explanation should be sought as a matter of urgency."

A spokesperson for the Rugby Football Union said: "The RFU conducts regular reviews following all games that take place, as will be the case for Saracens v Harlequins."