When it comes to Indra and Ashura transmigrants, I think we can pinpoint when their chakra swapped individuals pretty effectively. From what I can tell, there were no transmigrants between Madara and Sasuke and Hashirama and Naruto. This can be proven by when Madara died.
When Obito attacked, Naruto was a newborn and Sasuke was under a year old. Obito attacked Konoha less than a year after he left Madara's hideout. This means Sasuke was born right around the time Madara died, creating a perfect transition for Indra's chakra.
HOWEVER..... this would mean that Ashura's chakra quite literally waited decades to transmigrate again. Hashirama died decades before Madara did, meaning Ashura's chakra simply wandered the world for decades until Madara finally died, than picked Naruto as its transmigrant.
Now its possible Ashura transmigrated between that time (Minato as an Ashura transmigrant anyone?? JK) but more than likely he didn't. Thoughts on this matter?
When Obito attacked, Naruto was a newborn and Sasuke was under a year old. Obito attacked Konoha less than a year after he left Madara's hideout. This means Sasuke was born right around the time Madara died, creating a perfect transition for Indra's chakra.
HOWEVER..... this would mean that Ashura's chakra quite literally waited decades to transmigrate again. Hashirama died decades before Madara did, meaning Ashura's chakra simply wandered the world for decades until Madara finally died, than picked Naruto as its transmigrant.
Now its possible Ashura transmigrated between that time (Minato as an Ashura transmigrant anyone?? JK) but more than likely he didn't. Thoughts on this matter?