Many thanks for the link to this very interesting interview.
Yes, drummer Joe Nay was strongly connected with Tete in 1971, taking part in several of his discs: "Body and Soul" (Enja), "Recordando A Line" (Discophon), "Ten To Two Blues" (Ensayo) and "It's About Blues Time" (Ensayo, under Goykovich's leadership). I have also got documentation on several concerts in Germany (Spring 1971) and Spain (Autumn 1971, with Dexter Gordon or Pony Poindexter).
As for Mickey Bahner, in my TM chronology, he only appears once: in a concert in Schwabach (May 1971), with Dusko Goykovich on trumpet and flugelhorn and Frank St. Peter on tenor sax, of which there is a private tape.
In the abovementioned interview, Bahner talks about "early 70s", so maybe he is not the bassist on Tete's first residence at the Jazz Galerie in May 1969... or rather he simply does not recall this earlier collaboration.