I’m very interested to know why you chose to test this pairing? BT’s belief was that his 2-bath developer restrained highlights. If there was a shouldering problem, like
@koraks described, it would presumably be at its worst with this developer.
I have used BT2B contentedly with conventional films for several years now, and because I find the resulting negatives easy to print, including intense highlights like electric lights, I’ve accepted the theory. But I was really surprised by the result that
@aparat got with Tri-X in BT2B: no evidence of restrained highlights at all. (I can’t link to it here because all links on Photrio to his plots seem to be broken.) I suppose the outcome may depend on how you use the developer (agitation), but its properties seem something of an open question at the moment.