Originally posted by RedSky:[..]
The original broadcast would have been lossy
Then any video taping (back in the day) would add to that loss
Further copying - that wasn't digital - would've added to the loss
A recording of the original lossy audio made into a lossless file without further gen degradation would be super rare but still lossy
So lossless doesn't always mean it's the best sounding recording because you have to have provenance as to its history