"Kevin and I were spoken to in the gents. So that was a very nice scene, my first meeting with a match referee!" coach Ashley Giles said.
"We've got to be careful with reactions to decisions and Andy was right to speak to Kev. But I think common sense prevailed. It was just a little word."
Pietersen was adjudged caught behind by umpire S Ravi off Ishant Sharma for 17.
Giles felt the match referee did the right thing and players have to be cautious.
"Andy was right to speak to Kev," Giles admitted.
"But I think common sense prevailed. I didn't think it was a reaction, more disappointment from Kev.
"But we've got to be careful with reactions to decisions. It's tough for the umpires here, it's so loud that decision making is tough. We understand that."