It's impossible to say for sure, but I'm not so sure he did - do you think he'd leave Fagen's vocal improvs out of The Boston Rag or add those extra guitar bits to Reelin' in the Years (amongst other obvious mix differences) after spending months laboring over the stereo versions?
After the revelation recently that it was Alan Blazek and not Bill Szymczyk that did the quad mix of the Eagles One of These Nights, I don't think anything can be taken for granted.
After the revelation recently that it was Alan Blazek and not Bill Szymczyk that did the quad mix of the Eagles One of These Nights, I don't think anything can be taken for granted.