I'm satisfied with the conclusion because I can't think of one single thing that would change the result or who it's attributed to. I believe Harley's death was an accident and he died because he got stuck down a chimney he climbed into on his own, and I can't think of a single scenario where that's NOT what happened. That's part of the reason I asked for your theory earlier. Imo, there might be some interesting non-material details that could or may be found, but nothing that would change those material conclusion that I can imagine.