Actually, it has already been stated that even Toril has a separate framework from the Great Wheel; thus it actually makes sense nowadays that Eberron might have a more direct connection to Ravenloft the same way that Faerun currently has.The Nightmare Man wrote:... the Great Wheel is an entirely different cosmological framework to that which was presented in the Eberron Campaign Setting.
Let's face it: Ravenloft is a D&D world, has been, always will be. It even says so on the cover of the much beloved RLCS. So many people nowadays disavow Ravenloft's planar connections with the other D&D worlds, I'm not about ready to be one of them.