Good question. In the Scotland game, as well as reviewing the Argentinian penalty they were apparently also going to see if there had been an offside in the build-up, thus negating the penalty claim. How far back should the review go?With cricket though, as the game is spread out over at least a whole day, reviews don't really delay the game that much. I accept VAR is coming in to football and we'll all eventually get used to it, but I think the days when the game finishes at 4.50pm (assuming a 3pm kick off) will be a thing of the past.
Also when a goal is scored how far back will VAR go in the build up to that goal to check for a possible foul or infringement in the build up, 10 seconds, 30 seconds, up to the point the ball last went dead?