Wyatt Johnston cut it to 3-2 at 3:57 in the third period, extending his goal streak to five games. He leads NHL rookies with 21 goals.
Tanev scored his second of the game at 14:03 to give the Kraken a 4-2 lead.
Dallas forward Ty Dellandrea appeared to score 42 seconds later at 14:45, but the goal was overturned after Seattle challenged for goaltender interference.
"I was kind of hoping, because when the play is happening, you don't really know exactly what happened," Daccord said. "I just saw the puck go in and I was like, 'Well, that's not great.' And then I was like, 'Wait, there's someone pushing me right now.' So then I waited for the replay. I think [Stars forward Max] Domi just kind of came into me a little bit, and then I was trying to push forward and he was in the crease so I couldn't move. I think that's why. The ref came over to me and said I didn't have any room to move, and I was like, 'Great, we'll take it.'"
NOTES: Heiskanen extended his point streak to 11 games (19 points; four goals, 15 assists), a franchise record for longest by a defenseman (Craig Hartsburg, Minnesota North Stars, Nov. 22 to Dec. 15, 1986, 18 points). Heiskanen became the third Stars defenseman to have 50 assists in a season (John Klingberg, 59, 2017-18; Sergei Zubov, 58, 2005-06). ... Kraken defenseman Vince Dunn had his 12-game point streak end (17 points; four goals, 13 assists).