After an engrossing weekend of action, two things stood out for me: I've never seen so many maul turnovers in test matches, and it's true, the smaller teams don't get the rub of the green when it comes to referees.
It was fascinating to see Ireland's tactics at the breakdown against Australia. Their two experienced locks, Paul O'Connell and Donncha O'Callaghan, were very adept at getting a hand or leg over the ball and slowing it up just long enough for their defence to realign, and getting out quick enough so they didn't get penalised.
It was Ireland's ability, though, to turn the tackle into a maul, that was a standout. To a lesser extent England did it against Georgia, but it was the men in green who mastered the art of keeping the ball carrier high in the tackle and not letting them get to ground. That turned the tackle area into a maul and referee Bryce Lawrence was quick to blow it up and award the scrum to the defending team when the maul finally went to ground.
The laws do state if the maul has gone to ground and the ball is not available the ref has to immediately blow it up. However, I still think the official has a duty of care to find the ball or to know where it is before he blows it up.
A couple of times in the England-Georgia game, controlled by Jonathan Kaplan, the maul went to ground, Georgia had taken it in and England were given a scrum despite the fact the ball had been presented immediately by a Georgian player. Kaplan was on the other side of the maul and blew it up as unplayable, when clearly the ball was there to be played.