Almost, but not exactly: The article describes moving through two doorways, the last one taking the person back to the original room. That's different from pass

Almost, but not exactly: The article describes moving through two doorways, the last one taking the person back to the original room. That's different from passing through a doorway but never entering a new room. If the "doorway effect" significantly decreased in that scenario, it would strongly suggest that it's the sudden introduction of new surroundings that triggers the memory dump that the article describes, rather than the doorway itself.