Dwayne on sen made a good point, the clock went to 0.0 way before the ball went out. That should be the discussion. Why isn't the end of play synced with the clock? Instead o relying on a time keeper to blow the siren and for the umpires to hear it?
Forgetting about recent blackout events.....
It should be a fairly simple task these days to hook the official time clock/siren to the LED signage on the fence and have an instant visual aid to show that time has expired.
If we're going to go to the ARC for these scenarios then this makes a lot more sense than trying to hear the siren on the broadcast and compare it against the vision.