Destructive Wallabies winger Koroibete was red carded five minutes into an epic decider against France on Saturday night, before Australia rallied to secure a stunning 33-30 triumph.

Now Koroibete must face the wrath of rugby's judicial process, but Rennie is already making a case to save one of his biggest stars from a stint on the sideline.

Rennie believes Jelonch's head comes forward at the first point of impact, adamant "clearly the first point of contact is not the head, it's the body, so there is mitigating circumstances around that".

"It was terribly milked," Rennie said.

MORE SPORT

"He obviously feels as though he has got some head contact and then he has grabbed his face, which is nowhere near the point of impact, and it's delayed by five seconds.

"Tate McDermott, in an attempt to stop a try, got a forearm to the throat. It's a penalty, red card, and disallowed try, but he doesn't lie on the ground.

"Hunter Paisami got a shoulder straight into the draw, it was at the same time we had a penalty advantage from Lenny [Ikitau] being tackled high. Again, Hunter doesn't lie on the ground.

"Any time there was anything like a head shot, these guys had been shot by a sniper. I find that disappointing.

"[World Rugby's guidelines are] clear. The issue for us is, do we get to the stage where we're telling our players to lie on the ground like the French did? I don't think it's in the spirit of the game."

It caused uproar from many among the 34,164 inside Brisbane's famed Lang Park, and those watching from the comfort of their lounge rooms.

Of those there were plenty, with Rugby Australia lauding the three-Test series against France "a staggering success for broadcasters Nine and Stan Sport".

The decider peaked at 952,000 in the final stages, having averaged 691,000 viewers to make it the nation's most watched program outside of the news on Saturday night. The figures do not factor in those watching on Stan Sport or 9Now.

A stirring series victory will undoubtedly give those viewers a reason to tune in again when the Wallabies turn their attention to the All Blacks in next month's Bledisloe Cup opener.

Critics will overlook the absence of Australia's preferred starting halves Nic White and James O'Connor and instead point to those missing from the French squad on this condensed tour.

But Rennie says "people making comments about the quality of the French side have got no idea about the quality of French rugby at the moment, it is incredibly strong".

One need only look at the faces on those in Wallabies camp and in the stands when Darcy Swain spoiled France's last-gasp attempt to win the series for an idea of what this victory means.

"I thought [Swain] had a massive impact, not just in moments late in the game but throughout," Rennie said.

"We were able to put their set piece under pressure. Darcy was a big part of that. It's the reason we picked him. He has found his feet quickly, deserved his start, and had a big say in the game."

Our journalists work hard to provide local, up-to-date news to the community. This is how you can continue to access our trusted content: