After weathering the storm, Munster made a rare foray into the Benetton 22 and after winning a penalty for another breakdown infringement, Healy took the three points on offer to extend the lead to four points.
Back came Benetton as second-rower Federico Ruzza broke from a ruck and flipped a pass to Callum Braley bearing down on the Munster line but the move was snuffed out as the Irish province got numbers back.
Benetton had a wonderful opportunity to take the lead for the first time 10 minutes from the end when a flipped pass found Tommaso Benvenuti in space on the left but a brilliant covering tackle from Haley prevented him from grounding the ball.