I’m not too sure if he flagged, but I wonder if the lines were drawn between the tracking Brentford defender and Pukki — and not by checking which norwich player was furthest forward.
To me it’s more akin to a goal in which the striker is one on one and cuts it across to a teammate that runs onto the ball and can score in an empty goal.
I would like to think VAR are competent enough to check/dispute that, but that is at least my understanding. I get that perspective might mean that Pukki is still infact further forward, but it’s definitely closer than it has been reported.