But that's exactly the point - if the rules say it has to be a "clear and obvious error", subsequently if it isn't then VAR shouldn't be involved.I think the "clear and obvious" stuff is a bit of a red herring, and has taken on a mythology of its own. The ref wouldn't have seen the shirt pull in real time. He was told to look at it, and when you see it on the replay it's a foul every day of the week.
If a shirt pull is a foul then it has to be given every time it's seen. If the ref has seen it and plays on, there's absolutely no point if it means a goal is scored a few seconds later then is chalked off. If the ref hasn't seen it, i.e. can't see it, then it's not an error. How can not being able to see something be an error, "clear and obvious" or otherwise?
This idea of letting the game flow needs to be clarified. at what point is a foul not a foul? And if you're going to let it go then you can't pull it back later on because it's resulted in a goal, it's ridiculous.