"They're in the changing room with (India) now, to talk to them," Waller said at the post-match press conference after the fifth ODI here.
"The best time to learn is now in the change room with the best players in the world, and talking one-on-one when you're not shy talking out in the open. And our guys are quite bad like that.
"They don't go up and ask questions about cricket, and that's how you learn. And I'm hoping we try to change that culture. Hopefully they'll learn something from what they hear from the guys," he added.
Waller lauded Kohli for both his leadership as well as fine batting.
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"You look at someone like Kohli for example," Waller said.
"He doesn't play risky shots. He plays good, simple cricket and he finds the gaps, whereas I think our guys try to improvise more than they should. That's something that we're working really hard at: trying to convince them that that's the way we should be playing cricket," he added.
Waller, however, said the IPL influence was making his players believe that the best way to score was hitting big shots.