Virat Kohli slammed 84 in 49 balls.
AB de Villiers hit 32-ball 63.
The two added 108 runs.
Kuldeep Yadav picked up 1 for 31.
Marcus Stonis' 13-ball 28* got RCB past 200.
Chris Lynn hit 31-ball 43 at the top.
Chahal was RCB's best bowler.
Andre Russell's 13-ball 48 help KKR pull off a heist.
He smashed seven sixes and one four.