For those super amped solutions you really need that northern energy to pinch off. Slows everything down, allows heights to recover and acts as a fulcrum for the shortwave to rotate around
things like the GFS show it being still entrained in the long wave trough and actually pressing down on heights over SE Canada resulting in a more sheared system that transfers faster
For my neck of the woods, I’m personally pulling for the GFS, but I want everyone to win