AHC/WI Greater Tayikistán?

I think the best bet for that is just have Stalin decide that they should be one ssr and change that in the mid 30s- ethnic identities hadn’t really crystallised up to that point and could I think pretty easily be moulded
Is there a possible PoD for a United Turkestan SSR under Tajik (at the time Tadzhik) leadership?
 
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