But isn't that exactly what happened yesterday? Atwell believed Ederson put the ball out fairly for a corner, VAR will have known that whilst they were reviewing it, having reviewed it they decided that there was nothing 'clear and obvious' to suggest Atwell reviewed it on the monitor. With the Silva incident, VAR will have established that Atwell didn't see the shirt pull in addition to the contact with Xhaka's leg. On that basis they've suggested Atwell go and review it on the monitor which he did, saw the extent of the foul and awarded the penalty. VAR only sends the ref to review incidents they know he's missed, they have the benefit of replays and so it's logical that most reviewed decisions will be changed.