Clip 3 - 13 May 2019 - Law 17
Herschel Jantjies, scrumhalf of the Stormers, kicks a high ball down into the Crusaders' 22. George Bridge of the Crusaders runs back to catch the ball. He raises an arm to show that he was claiming a mark (fair catch).
The referee blows the whistle to acknowledge the mark. Bridge passes the ball to David Havili, who kicks the ball into touch, where the Stormers have a throw into the lineout.
The way the mark was taken and claimed was correct.
The referee was correct to blow his whistle.
But the ball must then be brought into play with a kick.
Law 17.3: When a mark is called correctly, the referee immediately stops the game and awards a free-kick to the team in possession.
A free kick, not a free pass.
Law 21: The ball must be kicked a visible distance. If the kicker is holding it, it must clearly leave the hands. If it is on the ground, it must clearly leave the mark. Once the kick has been successfully taken the kicker may play the ball again.
The abbreviated version of the Laws of the Game does not mention any sanction for not kicking the ball
The pre-abbreviated law, which, we are assured, has not been changed, did have a sanction. It said, in Law 21.3, Any infringement by the kicker's team results in a scrum at the mark. The opposing team throws in the ball.
The Stormers would probably have liked a scrum some seven metres from the Crusaders' line.