Board Thread:Theories and Speculation/@comment-30241447-20190512072419/@comment-32685487-20190513015118

No, he was able to take over the control of his own Edo Tensei after Kabuto was forced to release the Jutsu. He was still an Edo Tensei, he just had control over his own summoning then.

Konan did insinuate if Nagato was at full chakra he could bring those people back without dying, we also have to remember he was called an Uzumaki and called a Senju too. So he may be of Uzumaki and Senju blood meaning he is probably the only person who could have used the technique and lived. Probably the reason why Madara thought Nagato was the only other person who could use both Rinnegan too, his powerful body and genetics were suited for it.