If anyone is interested that's certainly an interesting connection.
Back during one of the mini Ice Ages over the last 10 thou, a bunch of them moved South to Bhutan. They did quite well. Buddha was a Sakha BTW.
Then, about 200 AD the Hindu Restoration was initiated, Buddhists weren't all that welcome, and the Sakha were chased away.
Recently Russian archaeologists have determined that the Sakha RETURNED to Yakutia.
They later left there when the climatological catastrophe of 535 AD happened. They are believed to have then conquered Korea, and Japan ~
And here everybody had their eyes on the Ainu trying to find that "white blood"! They should have asked the Emperor.
That part of Yakutia has recently been in the news. That's the area where Dr. Mann got his tree ring samples he then misused to tell everybody it was getting warmer.
It does appear that as isolated as Yakutia appears to be the folks who live there can get around the rest of the world quite easily.