Board Thread:Theories and Speculation/@comment-43776375-20190921063938/@comment-32685487-20191017041544

Because it would have made no difference, the Gedo Mazo would immediately suck that chakra away and turn him frail and skinny again, as it did to him when he first linked to it. IF he was not linked to the Mazo then he could have healed himself with the chakra he took but my theory is that taking the chakra is not what healed him, I think Nagato used an Outer Path TECHNIQUE that healed him with the stolen TB chakra, but of course you could heal somebodies legs and if they haven't actually used them for a long time they are going to need to get used to them again and rehabilitate them. Nagato has insane speed even with his legs weakened sure, but that doesn't mean it was inconsistent. In fact Nagato was fast enough to surpise Hanzo when he saved Konan and Hanzo took on the three Sannin at once and they are not slowpokes by any means.