Got it - - the jury's out basically.
But I just can help but think that, assuming mycorrhiza can be fed, rejuvenated and/or propagated in the tea at all (and setting aside whether or not the mycorrhiza will later transfer and bond and/or penetrate the root surfaces), that adding further fungi cultures would merely increase the quantity and/or variety of mycorrhiza that you end up with.
But I'm "green" at this, so I could easily be missing something.