Board Thread:Questions and Answers/@comment-5303512-20191025210913/@comment-10330822-20191026191425

Perhaps its not the same voice? Whose to say the voice created by the manifestation is the same as the Zanpakuto?

If we are to accept that the Zanpakuto Rebellion makes the appearance of the spirits canon, then its safe to say that the manifestations of the spirits on the outside are different from those on the inside.

For example, Hyorinmaru takes the form of a young man, but in reality Toshiro said its a giant ice dragon. Renji likewise was a woman and child, yet we clearly saw a baboon and snake after his defeat from Ichigo.

Note, I'm only suggesting this because we saw Katen Kyokotsu in the final arc as she was identical to her appearance in Zanpakuto Rebellion.

So is it possible, that Yachiru and Nozarashi are the same thing? One is the manifestation and the other is the true spirit, and the reason they have different voices is for the same reason Zabimaru did?