The Douglas DC-7 and Lockheed Starliner were the Superprops of airliners. They used Wright Turbo Compound Engines which at first glance appear to be in violation of the laws of physics.
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Links:
Turbo vs Supercharging: https://youtu.be/ULLsIo1VzTw?si=byXOuN6F9pz73d1q
Spitfire exhaust: https://youtu.be/Eo1kIp4iQdU?si=OWzHCa8mCEsxSbzG
TWA Flight Center and Lockheed Starliner / Constellation: https://youtu.be/xKPRqTGYIuc?si=1nLYwpz11zEzDyyk
WW2 Bomber Twin Tail design reasons: https://youtu.be/Jby3zlUoDh0?si=6JL6sQ9_zbpMIKL7