Board Thread:Theories and Speculation/@comment-45273751-20200421065317/@comment-6769189-20200421110254

Susanoo is a unlocked through MS so having 2 Rinne Sharingan might not do anything.

IIRC the only Rinne Sharingan specific ability shown was the Infinite Tsukuyomi. It should have all the abilities of a Rinnegan and Sharingan though