The second day controversy comes after Alex Carey was not dismissed on Wednesday, when England reviewed a caught decision with the Australian keeper on 72.
They didn’t give it away because the spike that appeared on the technology was out of sync with the images, but it was later revealed to have been operator error.
The first incident of the second day occurred in the 44th over, with England 149-5.
Australia appealed for a catch after a ball to Smith passed Usman Khawaja at slip and the on-field umpires sent the decision to the television umpire to check whether the ball had arrived.
Television referee Chris Gaffaney then deliberated over several replays, first checking to see if the ball had hit Smith’s glove or helmet.
Once again, the technology seemed inconclusive, but Gaffaney ruled that the ball had hit Smith’s helmet.
The hosts’ defenders were visibly unhappy and one Australian was heard saying “Snicko needs to be fired” over the microphone.
In any case, it seemed that the ball did not reach Khawaja.
More controversial was the second decision, which ultimately resulted in Smith’s firing.
He attempted a shot at Pat Cummins, but Australia confidently appealed for a slight cut.
Smith seemed certain he had not hit the ball and was ready to review the call if it had become known on the field.
Once again, on-field umpire Nitin Menon suggested that he was not sure if the ball had arrived, so he sent the decision to Gaffaney for review.
As the players gathered to await the decision, Nathan Lyon was heard asking off-batsman Ben Stokes if he heard anything.
Gaffaney said “there’s nothing obvious there” after watching an initial replay, but Snicko showed a sharp spike within one frame of the ball past the tip of Smith’s bat, the wiggle room allowed in such scenarios.
Smith was delivered. Both he and Stokes seemed frustrated with the decision.
