Stone then made it 3-1 at 16:02 of the third period when he batted McNabb's centering pass out of the air in front.
Hartman responded 31 seconds later to cut it to 3-2, jamming a rebound in at the left post.
“Extending the lead late from 2-1, you hate to see that last goal go in to make it tight, but that is hockey. They kept pushing," Cassidy said. "If you look at the last three games, our top guys were a lot more productive and impactful than in the first three games. That’s probably the biggest story right there. Goaltender, Theodore, Eichel, Stone, all of them. We got better as the series went on, and it showed and culminated tonight.”
Theodore gave Vegas an early 1-0 lead at 3:30 of the first period. He scored blocker side with a shot through traffic from above the circles on the power play.
Hill kept it a one-goal game when he denied Marcus Foligno on the doorstep at 9:40.
“I knew Foligno was there, and I thought (Noah) Hanifin blocked the pass, but it still got there somehow, so just kind of a desperation reach with my leg,” Hill said.
Hartman tied it 1-1 with four seconds left in the first period, scoring on a one-timer through traffic from above the right circle.
“We battled,” Hartman said. “Two overtime losses [in Games 4 and 5] and a close one tonight. Felt like it could have easily gone seven, but we felt like we had what it took to go forward.
“The confidence we had in our group for a deep run -- I think years past we had some pretty good teams, but this one, those things we went through, the way we stuck with things, this one feels like we could have gone deep.”