paulfromcamden
Baffled
All valid questions and I’m sure ones with no fixed answers as different labels and artists will hold different views. You are certainly correct that mastering a finished product from a tape is never a single run-through, there will be multiple tape runs to set levels, EQ, compression etc before firing the lathe up.
My guess is it will also depend on the condition of the tape, which will of course be largely dependent on tape stock used and storage conditions for the past 50+ years. It sounds like the BN tapes are all in great condition.