Mavrik Bourque put the Stars up 3-1 at 2:26 of the second period. Jason Robertson's shot from just inside the blue line went through the legs of Calgary forward Mikael Backlund and past the screen in front for the redirection by Bourque.
Steel put Dallas up 4-1 with his second goal of the night at 6:02. Duchene deked around the defender at the left circle before his cross-ice pass found Steel for the snap shot from the right circle, prompting Cooley to take over in net for Calgary.
“I think you’re always trying to get better and better year by year, and I think I’m trying to take steps this year,” Steel, who matched his career-high in goals scored with his 10th of the season, said. “I’ve been getting a little bit more opportunity, which is always great. I’m just glad to help contribute.”
Nathan Bastian redirected a point shot by Nils Lundkvist past Cooley at 8:48 to extend the Stars lead to 5-1.
Johnston made it 6-1 at 19:41 with a power-play goal, taking a pass from Duchene on his forehand in front of the net before backhanding a shot past Cooley, who went on to stop all 13 shots he faced in the third period.
“You definitely get confidence from when it’s going well,” Duchene, who has a team-best 17 points (eight goals, nine assists) during Dallas’ 10-game winning streak, said. “You’ve got to ride the wave. You want to make those peaks long. I think as a line we’re doing a lot of good things.”
NOTES: In 48 career games against the Flames, Benn has recorded 48 points (24 goals, 24 assists). … Benn scored his 409th career goal and passed Ray Ferraro (408) for the second-most by a player drafted in the fifth round of an NHL Draft. The only skater with more is Alexander Mogilny (473). … The Stars have 17 wins this season when scoring first on the road, which is the most among all teams. … Dallas forward Roope Hintz (illness) was placed on injured reserve retroactive to Feb. 25. Gulutzan said he's hopeful Hintz will be back for Dallas' game on Friday against the Colorado Avalanche. "We think he should be a player Friday and if he’s not ready Friday, I think it would be 100 percent on Sunday (against the Chicago Blackhawks)," Gulutzan said.