The episode occurred in the 45th over when Marcus Stoinis' delivery hit Bhuvneshwar Kumar's pad but prior to it, the ball had made a good contact with the bat, which was evident with the naked eye.
At one stage when India was 85/5 it was looking like India would not score more than 150 hardly but the efforts of the former captain MS Dhoni and all rounder Hardik Pandya took the scoreboard to 281.
The 28-year-old, with his unique unorthodox batting-style, hit three maximums in four Tests as he asserted his dominance over India spin-twins Ravichandran Ashwin. "We have not been just focussing on that, I can assure you that", Smith said.
Zampa though did get Pandya out for his only wicket in the innings but the bowlers' 10 overs cost 66 runs for his side.
"The message to Zampa as well was to bring his length back a bit".
"A soon as he got his length back a little bit and made him go across the ball he got him out".
Depth in batting tests a bowling unit in this manner. While the simple mathematical implication of the target revision was that Smith's side had to tune into a T20 mindset, the presence of a second new ball skewed the situation significantly in India's favour. Australia's lower middle order struggled against the Indian leg-spin duo.
"That partnership changed the game", Smith said. They have lost their last eight completed matches on the road, last winning one in September 2016, against Ireland. Unfortunately we weren't able to capitalise on the start we had. We are very sure of that. That's a positive for us. Hopefully, we would turn things around in a couple of days in Kolkata.
It was fast bowlers Jasprit Bumrah and Hardik Pandya who rattled the Australian top order before the spinners moved in.
Chasing 164 off 21 overs after a lengthy rain delay on Sunday, the visitors slumped to 4-35 in the eighth over when David Warner nicked Kaldeep Yadav through to MS Dhoni.
The Aussies have not played ODIs since the ICC Champions Trophy and will look to put aside their disappointing loss to Bangladesh in the first Test in Dhaka.
And Kohli said India once again today proved how good their lower-middle was. Rahane's credentials as an ODI player received a boost with his Man-of-the-Series performance in the five-match series against West Indies, but his overall numbers (most significantly his strike rate) continue to build a case against him.
Kohli now is jointly second highest in terms of century with 30 tons to his credit in 50-overs along with Ricky Ponting. Are we seeing the best of this mercurial and potentially great Rohit Sharma?
As both sides prepare to go head-to-head in the fierce heat of Chennai with thunderstorms forecasted for the day, we look at the three potential key battles.