Source/Site
Power/Work
I think unpacking any aeronautical question leaves room for almost absurd conjecture. Of course the nacelle does not provide power. It is the site, instead, of the Work. Or at least most of it, in modern Turbofan engines. Powered aircraft need, well, power. This happens well aft of the Work.
The Wrights used unducted fans. The power came from a combustion engine that provided mechanical energy to the fans.
Given extreme latitude in architecture, how is the Concorde different from the Wright Flyer? Distance from power to work?
I am still trying to suss the Wright's accomplishments. There were few shoulders to stand on, they made their own engine, for goodness sake.
The idea is to move mass, energetically enough to gain useful work, after all. It is an attempt at lazy magic that pulls people into heated discussion that requires a suspension of the basic Laws.
Mr. Optimistic has busted out the thread, imho.