Just to be clear, Desi was long gone, the editing was film and not video, and episodes were shot in six days, not completed.
Ha, thanks! Yes, of course I know it was film on the series, I routinely use video for film even though I should technically write "film'. Probably because of growing up with videotapes of things that were all "films". I also always think about the fact that Desi came back to Desilu at around that time, even though he was doing his own thing without Lucy -- just in the same physical location.
My point stands about the production schedule though-- no matter what fine point you want to put on it, the whole post-production process is much faster and less labor intensive for shows today.