The 56-year-old former Australian captain said he could not pinpoint what went wrong for India in the series but felt that they got distracted.
"Generally speaking when in that situation, it's a matter of a team getting distracted and getting away from the process that allows them to be successful.
"From what appeared to have happened from a long way away (Australia) was that Pakistan worked together well; they had a game-plan which they stuck to; they believed in themselves and worked hard towards getting the results they wanted to get," Chappell said.
"Obviously, Pakistan regrouped; they came back and fought hard; that was a good effort on their part. That will happen from time to time. What we need to do and what players that were involved in that series is to learn from theexperience.
"Sometimes, the worst days are your best experiences and best learning days because all of a sudden, it makes you step aside and think about what happened," Chappell said.
He also ruled out the need of a fielding coach for the team.
"I think at this stage, there is enough resources within the team and in the support staff (trainer Gregory King and physio John Gloster) to go ahead with what we got. From time to time, we might look at individuals who add something to the growth. At the moment, we are not looking at a fielding coach," he said.