Graeme Swann singled out the afternoon session on the fourth day as pivotal in England's seven-wicket win over India in the third Test.
The hosts were 86-0 in their second innings at lunch and on course to set England a tricky total to chase on a wearing pitch in Kolkata.
But Swann made the breakthrough when he bowled Virender Sehwag for 49, and he also had Sachin Tendulkar caught at slip as India lost six wickets for 59 runs before the tea interval.
"With the Mumbai Test last week when we lost the toss and somehow managed to come from behind in the game and win, you don't ever think you're going to emulate that," Swann told Sky Sports.
"But we did the same here. We lost the toss on day one on a wicket that for two sessions looked undeniably slow and low, and we thought it was going to be a real long haul to try and win the game from here.
"But that session on Saturday after lunch, after a pep talk from Andy Flower at lunchtime, those sessions come few and far between so it's good that we're on the right side of it."
Pace spearhead James Anderson, who took six wickets in the match, believes England still have room for improvement as they look to preserve their 2-1 series lead in the final Test in Nagpur, starting on Thursday.
He said: "There are still areas we can improve. I thought we could have bowled them out on day four but Ashwin played brilliantly. We could have been a bit more technical there and finished them off.
"We lost our last four wickets for 14 runs in our first innings and there are still areas we can improve, and we'll look at those going into the fourth Test."
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What will be the outcome of the fourth Test?