I dont think that was anything special i have been doing most of them techniques for years. I have seen guys before doing plate glass windows in loads of sections and that method is actually slower than doing the whole pain at once.
One thing for sure you cant keep that pace up all day every day, You will burn out in a matter of months, how do i know been there done that , always moving at 100mph.
The wet a pane while squeegieng the next pane is a very good technique to use on long runs of patio doors, I have a nursing home where the doors are about 10 panes wide and i always use that technique on them.
Dave