It could still go either way, but I'll accept that answer despite Madara flat out announcing it before he did it lol
The chakra Sasuke now houses (Hashirama's) is not his, and will run out of course. The chakra Naruto and Sasuke are receiving now also belong to someone else. Sasuke now has permanent access to both bloodlines with the cells, and Naruto will likely stick with the bijuu in some fashion, but my question is, will this power Hagoromo is giving them last forever? If so, how is it that it will last through the decades?