Board Thread:Naruto Discussions/@comment-30168027-20161007222916/@comment-3965545-20161029234842

Hagoromo's chakra is stronger and more vast than Naruto and Sasuke's chakra. His chakra is also influenced by the pure original Ten Tails. So they may have awakened their own SP Chakra thanks to Hag gifting them each half his own chakra.. but once the VotE fight was over they no longer had Hagoromo's haxxed chakra gift because they expended it all. Only their own chakra and the stuff they awakened remains.