If two people share an identical HVR-1 panel, whats the approximate TMRCA (Time to Most Recent Common Ancestor)?
This is very hard to estimate, because of the variable mutation rates in different parts of the mtDNA molecule. FTDNA gives 52 generations as the median — that is, 50% of people who match in HVR1 would find their common ancestor in 52 generations or less, while the other 50% would have to keep on looking.