[Galadriel55]

This is a bit of an alternate storyline question, but it occurred to me that both the dead and undead often scare the living through means that may not be scary for themselves. What would happen if the Dead of Dunharrow were to face the Nazgul? If, for instance, Aragorn's timeline and Sauron's military plan were different and the dead army met a Nazgul on its way. Dead people aren't afraid of death. Would the Nazgul therefore have less power over them, unable to inflict the same dread as they do to the living? Or more power, if they can interact more directly in the "Unseen" world?