A quick look at the Offside rule shows it just says this:
Quote
When off side 1. A player is off side except when he is in his own ingoal
if the ball touches, is touched, held or kicked, by
one of his own team behind him.'"
According to the word Sky got from the VR, he based the decision on both
feet being behind the ball when it was kicked. Although there is no mention of the ball in the rule.
There is no doubt that the player's torso was well ahead of the kicker's (but he was leaning forward and the kicker was leaning back. But torsos don't apparently matter; eg when defending on your own line, both
feet must be on or behind the line. There's nothing to stop your torso leaning over it. Is there?
There is much more doubt as to exactly how far the kicking foot was ahead of the nearest white line. I don't think the chaser's feet were ahead of the ball.
Personally I reckon the rule means (or should mean) that you mentally mark the spot where the
kicking foot is in relation to the pitch, and if the other player's feet are both not ahead of that point, then he's not offside. Looking at it like that, I don't think anyone can say it was offside.