might be interesting.
Many years ago a friend of mine read bout hooking up positive poles of Left and right channels into a center speaker to bring out detail recording engineers managed to drown out on master disc prior to pressing vinyl.
We laughed our butts off listening to Jimi Hendrix’ throat clearing, hawking and spitting as background noise from the studio came out clear as day.
It got too distracting as we went through a couple dozen LPs listening for this kind of stuff which really detracted from the overall “experience” (ahem…).
Not as much fun as hearing “I buried Paul” in that Beatles’ song (I was never really a fan but knew about this first-hand from my brothers’ TT)
But do let us know what you hear. I suspect, as others mentioned, you’ll hear some smearing/slurring - increased sustain/delay - of some signals as they work their way through the different cables.