See https://www.eupedia.com/europe/Haplogroup_T_mtDNA.shtml for more information on T2 - it is estimated to be approx. 15.000 years old, and is spread over most of Europe.
Hans' (b7a2) suffix indicates that he has a more precise test done, but you're not guaranteed to share a female ancestor with him any closer than 15.000 years.
Did you take the MTFullSequence test? If so, you may have information about other mutations defining a new branch under T2; if not, you may gain more information from taking one.