Board Thread:Naruto Discussions/@comment-1512913-20170417105433/@comment-25122992-20170419170821

It's not necessary the point of being teached or not being teached. I mean, look at MS users, has anyone else taught them their techniques? No, they have had to explore the abilities of their doujutsu on their own and successfuly mastered these abilities completely. For example, Itachi didn't teach Amaterasu to Sasuke, as well as Obito didn't teach Kamui to Kakashi, did it prevent both Sasuke and Kakashi from mastering the techniques on their own? Okay, Madara mentioned he taught Six Paths techniques to Obito, but Obito didn't even possess the Rinnegan back then, he still had to invoke its abilities by himself when he finally got it.

To sum up, either Nagato or Obito could've easily used Limbo (a Rinnegan technique) had they been the true owners, since a true owner is fine with using all the doujutsu abilities just intuitively.