User blog comment:Arachne sama/Shinigami Skills Heredity/@comment-6245676-20130619133601

I feel it's hard to use Zangetsu and Engetsu as examples for this case due to Zangetsu not being an actual Zanpakuto. Zangetsu (from what I've come to understand, could totally be off) was Ichigo's innate Shinigami powers and his hollow powers (From that weird "White" thing trapped in his mom) being shaped by the Quincy powers that reside within him.