Within the laws of the game, there are only two possible decisions. Either a penalty for the push or an offside because Salah was offside, active, and directly in the line of sight of the keeper.
Well its a very well established fact that the refs dont always follow the laws of the game to the letter, nor even could they and still have a playable game. They interpret severity and adjudicate accordingly. THE LAWS is just the fallback position.
Its very clear that the ref has total discretion and does what he wants, when he wants. the laws are a simple framework not this straight jacket they would have us believe. Just look at the first foul call Tierney made. he just took a goal away because he didn't want us to score. Nunez never even touched the guy. There is supposed to be a foul before you call a foul, according to THE LAW. didn't faze Tierney much did it.
In the second goal imo that shot was top bins at pace and the goalie was never getting there, and if he was unsighted it was because of a foul by his own player, and suddenly applying a retrospective ultra orthodox strict guideline interpretation of the offside rule made by a 3rd party to rule it out when even Tierney couldn't think oft hatt as the play developed is like sitting down to a foaming Carlsberg and discovering too late its actually hot camel piss.
VAR pretends its Carlsberg but its hot camel piss. Within the spirit of the game the goals should have both stood and the laws can fuck off back to some dark corner if stockley park think they outrank the soul of the sport.