Clip 1 - 13 June 2018 Law 16
"Tackle. Move away." - A maul cannot become a tackle. A maul stays a maul till it ends, whether successfully or unsuccessfully.
Wales have the ball, going right. Fullback Hallam Amos has the ball but is grabbed by Makazole Mapimpi and Oupa Mohoje of South Africa. The players stay on their feet as Seb Davies and Bradley Davies of Wales join in. At that stage, a maul is created.
Maul: A phase of play consisting of a ball-carrier and at least one player from each team, bound together and on their feet.
All five players are on their feet. It is certainly a maul.
When Amos forces a knee to the ground there are six players, three from each side, around Amos. When Amos's knee goes to ground, the referee calls: "Tackle. Move away." The ball is then released to Wales.
What was clearly a maul, it seems, became a tackle.
This is contrary to the laws of rugby football.