This is not a video attacking the ref or anything, I legit would just love to know what this law is and where I can find it. This happened in The Rugby Championship game on South Africa vs Argentina. This just looked like a clear try to me but as Mostert slaps the ball backwards after it initially went forward. The ball lands behind the point where it went forward from Mostert which I thought just meant it went backwards. So after the try is scored they go on to check it and they took a long time to go over multiple angles, despite the angles clearly showing what happened. So don't know why they had to spend so much time with that but any case. Then the ref, James Doleman, sees it and says something interesting. He says because it initially went forward from Franco Mostert's hand, that he had to regather it before it hit the ground, else it's a knock. That is confusing to me because how is it lost forward if the ball ends up behind the point where you touched it? I'm certain I've seen stuff like this happened, especially at lineout and it's deemed backwards if the ball is slapped back, no matter if it went forward. It's just a very confusing law that I tried to research but there is nothing on World Rugby that states it's still forward if the ball is slapped backwards because the ball has to be regathered. It's also a law that doesn't make a ton of sense to me which is why I find it weird. So I honestly couldn't tell you if this was the correct call or not, I have no idea about this wrinkle in the knock on law. If you know something I don't or know where I can find out more about it, please post it in the comments. Would love to check up on it.