Any SST, especially back in the '60s but probably today as well, would have to have been a thin winged narrow delta with a minimum cross section fuselage (hence Bristol 223, Super Caravelle, TU144, and Concorde).
The Americans tried variations on this with their proposed SSTs and failed miserably.
Concorde's wing is a far more complex shape than that on the TU144, and the engine intakes (the secret of its supercruise ability) far superior to the TU144 design. Not much copying going on there, then!