The England LH is quite clearly binding on the arm of the Wallaby hooker. Don't the laws say he has to bind on the jersey of the opposite prop?
Why would he do that? Is there some other surreptitious advantage to be gained that hasn't yet become clear to us mere mortals?
Not really - might piss the hooker off a bit but its better to get your bind on and keep it somewhere, because if you move the ref might ping you anyway. And on these tight jerseys, binding can be hard.
Looking at the latest pic:
Still working on the others, but Cole seems to be using his initial bind to stop Sio getting a higher bind which would provide better leverage off his back before sliding up to bind on the arm and push him down. With no hold on the back, just the shirt, Sio goes straight down.
Again, from the 2nd scrum (the penalty vs Sio one):
View attachment 7993
Exactly right JJJ.
The long bind either needs to be higher up over Cole's back, or in the red circle - bend the elbow, get the bind right up across Cole's back, and use it for leverage, as well as holding him in place.
Needs a bit of momentum to shoot that bind up there, but if he angles right on the bind call (drop the hips a little) he'll be able to get under Cole, swing the arm over the top, and force Cole's longer bind upwards.
Then he can raise the hips, let the lock and flanker set on his backside, and apply the blowtorch.