Probably. The question might be with some classical music with silent passages about -50dBFS.
You would be hearing hum (continuous) and some of its harmonics at best, it won't 'tighten bass' or give deeper or more extended lows, 'smoothen' or increase treble or clarity, provide better imaging etc. This is what is commonly associated with the 'better sounding cables'.
As soon as there is hum or continuous 'noises' one starts to fiddle with cables first... but to get rid of the continuous 'noise' not to improve SQ.
I have encountered quite a few 'generic' RCA cables that came with equipment that didn't even have a screen, just merely a wire for screen.
In many cases this did not lead to any induced hum. This is also dependent on the output resistance of the source b.t.w.
So sure there is quite a difference between interlinks when it comes to shielding, groundloops etc... but not in sound quality as claimed by cable believers.
This can't be RMAA's fault so there is something wrong with the cable.
The crosstalk here is typical measurement error or a short which is easily confirmed with a multimeter or by using the cable in a stereo setup.
I don't see RCA cables shorting the 2 channels happening though. That leaves measurement error.