Hintz intercepted a pass from Blackhawks defenseman Nikita Zadorov in the offensive zone then sent the puck to Jason Robertson, who tucked it past Lankinen's right leg to put Dallas ahead 2-1 at 1:13 of the second period.
"He shows what he means to our team, he's our best forward," Bowness said of Hintz. "You guys are seeing points and goals like tonight. What we see also is how well he plays without the puck, how reliable he is defensively. He's one of the top two-way centers in the League, and he'll keep getting better."
Miro Heiskanen made it 3-1 at 14:02 from the high slot for Dallas' second power-play goal.
Chicago defenseman Duncan Keith lost the puck while skating backward along the blue line, and Comeau scored on a breakaway to make it 4-1 at 15:57.
Hintz intercepted Keith's pass into the neutral zone then passed across the slot to Comeau, who scored on Lankinen's glove side 50 seconds into the third period for the 5-1 final.
"We seemed to be a little bit fragile," Blackhawks defenseman Connor Murphy said. "Instead of picking each other up and a mistake on a goal or a shift where they're on us, we don't seem to be responding very well. That's on us as a group, and even a leadership group, to be able to recognize things and get our game going in the right direction."
NOTES: Hintz has scored 27 points (12 goals, 16 assists) in 27 games this season. ... Dallas is 11-for-11 on the penalty kill in the past five games. Chicago is 0-for-13 on the power play the past four games. … Chicago acquired forwards Brett Connolly and Henrik Borgstrom, defenseman Riley Stillman and a seventh-round pick in the 2021 NHL Draft in a trade from the Panthers, who received defenseman Lucas Carlsson and center Lucas Wallmark, on Thursday. Connolly and Stillman will join Chicago on Saturday in Columbus.