Board Thread:Naruto Discussions/@comment-26320638-20150422140407/@comment-6769189-20150423022041

The databook says Hagoromo gave Sasuke the Rinnegan. It does not mention recieving cells when he was revived. If the chakra mixes it doesn't fade.

From what we have seen chakra integrates and becomes the receivers chakra and loses properties of the one who was taken (check any absorption technique)

Chakra merges, mixing properties of both of the chalras involved(Asura/Indra, Mangekyou)

Chakra is put on reserve or is in use seperately from the receivers chakra supply(tailed beasts)

Sasuke seems to have integrated it or had it on reserve