UAP / UFO Sighted Calgary - Vancouver Flight

The Canadian UAP Dennis Pena was travelling back from a holiday at a spiritual retreat in Calgary to his home in Vancouver. On the flight he came across a very strange glowing light form right outside his aircraft window. Dennis just could not make any sense of what he was seeing with his own eyes. At first Dennis thought it was the sun reflecting on the window, but then he realised that it was not behaving in accordance with the logic of the sun rays and flares on the window. So he waved his fingers in front of it, thinking maybe it's something in the airplane reflecting on the window. That wasn't it either. Then at around the 1:15 mark in the video the plane happened to lean slightly and you could clearly now see the wing and the light intersect and it appears that the light gets covered by the wing and it reappears behind the wing... meaning clearly the light was not a reflection on the aircraft window. So what was it? Dennis looked back into the cabin and down his row