The second period was the Avalanche's best and most complete of the contest. It outshot the Rangers 12-9 and took the lead on John Mitchell's second goal of the season early in the frame.
But Colorado couldn't sustain that effort against a New York squad that came out firing to begin the final stanza and scored on two of its first three shots of the period.
"For whatever reason, we just kind of get on our heels in that third period, and that just can't happen," Landeskog said.
One thing that can be said about the Avalanche is it didn't give up in the closing minutes as it had its own push to try and knot the contest up once again. The club had several good chances but couldn't get the equalizer.
"Listen, I know our record overall is not good. It's horrible, but at the end of the day you look at the way we just played over our three-game homestand, and we were a dangerous team," head coach Jared Bednar said. "We can be loose. We have nothing to lose. We can be confident from what we just did recently, and I just wanted us to lay it on the line and let the chips fall where they may at the end of the game. You just make a push instead of rolling over. I wanted to make sure that we were digging in. I would have liked to see it for a full 60 minutes, but at that point there was only eight minutes left, and I thought that's exactly what we did."