The call is wrong on multiple levels
How did they even get to challenge? no call was even made, the game wasn't stopped, if it was stopped it would've been due to it being the end of the game and the referee blowing full-time at which point, I am fairly certain it can't be challenged
Then there's the ruling, he's literally running backwards towards the flight of the ball with only eyes on the ball, Kyle Feldt is as big a cheat as anyone else in the NRL. The laws of physics will tell you for his body to end diving that way with 2 players running literally the same direction, it's near impossible