Leaving aside the whole issue of whether they got it right or wrong, the other issue is the fact that it just takes too damn long. The rule is that if the footage is inconclusive then the goal umpires call stands. The amount of time they spend looking at some of these things (not just last night, but in general) is ridiculous. It should be done and dusted in 30 seconds max. If you have to slow-mo, single frame forward and back, zoom in on it for a minute or more then the footage is obviously not conclusive. If it was conclusive then the result would have been obvious sooner than that.
There should be a 30 second limit on it - if they can't come up with a result in that time then it's goal umpire's call and get the game going again.
Some of the footage they make "conclusive" calls on is ridiculous. A bent finger when there is no frame clearly showing the ball touch the hand (lets train for this). That view from the side to see if the goal crossed the line, even though the camera is on an angle that if changed, would probably change when it looked like the ball crossed the line.