Will to Power and Communication

Given that Nietzsche is a prolific writer who is rarely shy about challenging entrenched dogma, it is surprising to read his assertion that "We 'free spirits' are not exactly the most communicative spirits", in Beyond good and Evil #44.  Perhaps he is here alluding to his advocacy of Miscegenation, a far-sighted, provocative, concrete proposal that he withholds from his official publications.  In any case, also unclear from the passage is his concept of 'Communication'.  Now, on the basis of his Will to Power principle, Communication can be classified as either a medium of Empowerment, e. g. as benefiting others, or as one of Overpowering, e. g. as manipulating others.  In contrast, not easily reducible to either of these varieties is the concept of it expressed in 'The Convalescent' section of Thus Spoke Zarathustra--"Are words . . . not rainbows and seeming bridges between things eternally separated".  Implicit there is a concept of Communication that evokes some of the early passages of Birth of Tragedy--a means to fellowship, a process which seems to have no clear translation into a Will to Power doctrine.  That it is a concept cherished by a 'convalescent' raises the question of how much of that doctrine is an expression of illness.