3rd Wire in Unbalanced Interconnect?

[Galu]

The way I read it, in the RCA configuration, they are simply paralleling two conductors for the return path and using the third conductor for the signal path. The screen is connected at one end only.

That's all very fine, but I can't see any advantage in the doubling up and AudioQuest do not attempt to explain the 'performance advantage'.

I'm happy to avoid exotic cable geometries and simply stick to what's tried and tested.

Some of those high-end cables do look awful pretty though!