Originally Posted by
WhyFi
No. Saddle positing should be set relative to BB/crankset/pedals. Handlebar position should be set relative to your saddle, not the other way around.
Saddle distance from BB should be constant, but typically when lowering the bars people like to use a steeper seat angle, which is what our friend is describing. I don't have the cite I was looking for, which was a column on Slowtwitch about multiple bike fitters creating rigs to accomplish this independently. Unfortunately, while Slowman is brilliant at a lot of things, his site is very difficult to explore.