Mr. stevcham
Sorry, if it wasn't humor!
Current always goes one way, never flows in close loop. How could I miss that lesson in engineering? That’s the very basic. Way before Kirchhoff's circuit laws https://en.wikipedia.org/wiki/Kirchhoff%27s_circuit_laws
Single speaker cable sounds way better than two wires (red and black). Its SNR is phenomenal. It is hard to find those days' speakers and amplifiers with two binding posts per channel.
Impedance is very important when two separate cables are used. I wonder if you took the time to read my say about it on this thread.

