Board Thread:Naruto Discussions/@comment-27521865-20190624190722/@comment-681696-20190704193500

Personally I always interpreted the Onoki saying that Mu taught him Dust Release as Mu passing down to Onoki who shared Mu's Kekkei Tota all of the Dust Release techniques that Mu had learned or developed rather than Mu giving Onoki the Kekkei Tota.