The walker incident certainly looked like a straight knock on, but the calls are the calls. As for the SF I will say it again, bbc don't know how to cover the game. Watch most SL games they make the decision pretty quick so basing the VR use on the SF game is a bit harsh. Even at Catalan decisions were made pretty quick.
That restart penalty was shocking., it is where I get annoyed though, you can straddle the side line and the ball is out on the full penalty, straddle the dead ball line the ball carrier has taken it dead drop out !!!!!!!