Fascinating neurology. I achieve the same articulacy (having systematic, "hyperlinked" conversations on complex subjects) when I close my eyes; I suspect it frees up resources which are in turn devoted to verbal communication. But my Neurologist friends suggest the brain isn't wired this way - that these are two independent systems whose resources cannot be shared that way.

Regardless, this too lends itself well to Covid-induced remote meetings where video isn't a priority.