Board Thread:Naruto Discussions/@comment-1018594-20160409062530/@comment-25122992-20161016205809

It doesn't seem like Hagoromo's chakra recreation played some role here, otherwise, Madara would've got a chance to speak with him too as soon as he recreated his chakra and awakened his Rinnegan.

Moreover, it's possible that conversation of Naruto/Sasuke with Hagoromo started even before they were saved by Obito/Kabuto respectivelly - when Naruto wondered if he could leave his mental plane, Hagoromo noted that it depends only on the actions of the people outside.