Added-conductor and directional audio interconnects: Real-life benefits?

Does vendor-claimed audio cable directionality make theoretical sense, far from delivering real-life perceptible benefit? And what about the number and organization of in-cable conductors?

Within my recently published two-part series on the equipment comprising my newly upgraded home office audio setup, I intentionally left out one key piece of the puzzle: the cables that interconnect the various pieces of gear in each “stack”. Come to think of it, I also didn’t mention the speaker wire that mates each monoblock power amplifier to its companion speaker:

but that’s a hype-vs-reality quagmire all its own! Maybe someday…for now, I’ll tease you with the brief revelation that it’s a 2m (3.3 foot) GearIT 14 AWG banana-plug-based set purchased in like-new condition from Amazon’s Resale (Warehouse) section for $17.18:

Conventional recommendations

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