Board Thread:Naruto Discussions/@comment-46214474-20200629021640/@comment-6769189-20200701122808

Practicing something is very specifically so that you can use it effectively in a fight. If Sasuke can get a brand new Rinnegan and head straight into battle, utilizing a time-space ninjutsu for the first time

Then Madara with even a little practice can effectively use his Rinnegan in a fight. And he showed more than competant use of the abilities he did use