It was only fitting they were there once again in Game 6, connecting on the opening goal in a 4-1 win against the Minnesota Wild at Xcel Energy Center on Friday.
Hintz finishes his first round with 12 points (five goals, seven assists) to lead all Stanley Cup Playoff scorers. Seguin, whose pass sprung Hintz on the opening goal, leads the Stars with four power-play goals.
"Yeah, I mean, what can you say about Roope? He was fantastic all series, just went to a whole other level," Dallas coach Peter DeBoer said. "And I thought Tyler Seguin was outstanding. When Joe Pavelski goes down, that's not an easy spot to fill and he worked, he got better and like our team, got better as the series went on, got more confident in that spot.
"We wouldn't be sitting here moving on to the next round tonight without Tyler Seguin's contributions in this series."
RELATED: [Complete Stars vs. Wild series coverage]
The Stars will play either the Colorado Avalanche or the Seattle Kraken in the second round. The Avalanche defeated the Kraken 4-1 in Game 6 on Friday to even that best-of-7 series 3-3. Game 7 is at Ball Arena in Denver on Sunday (9:30 p.m. ET; TNT, TVAS, SN, ALT, ROOT-NW).
Seguin moved up to the top line with Hintz and left wing Jason Robertson, and to the first power-play unit to replace forward Joe Pavelski, who has been in concussion protocol since he was injured on a hit from Wild defenseman Matt Dumba in the first round.
With Pavelski close to returning, DeBoer said, "I would've had to hire a team of 10 guys to probably keep him out of Game 7 if we got to that point."
But in a pinch, Seguin delivered.
"He's been great all year," defenseman Ryan Suter said of Seguin. "When guys would go down on that top line, he would step in and fill that gap and then in the playoff series, he's been great for us. He stepped up again for us, and it's just good when you've got everyone kind of pulling the rope in the same direction and going after it."