In a season defined by mostly a lot of highs but also some where-did-that-come-from lows, there have been two constants for the Colorado Avalanche. One is Nathan MacKinnon, who is in pursuit of an NHL home scoring streak record held by Wayne Gretzky that is entirely predicated on consistency. The other is a guy at the other end of the lineup and a very different stage of his career. Andrew Cogliano is never going to be discussed among the most impactful players on the ice for the Avalanche.