Sans....I was at West Palm Beach back when the ABC was flying.....that is where I first met Nick Lappos who was one of the Test Pilots.....that was back in 1979 or so.
If Sultan can claim the V-22 as new concepts despite all that went before it clear back to the 1950's.....I would suggest you can give me pass on this.
The ABC did not have a pusher prop.....that came from Piasecki which had that on a Blackhawk airframe a few years back.