Or change the rules a little. I never went all in with this but I wrote a track once that had some dissonant Holdsworthian chords in it. I intentionally split the part between 2 guitars. It wasn’t a matter of comfort but orchestration. Not even Allan could have played these chords because each track had 3 notes on the E B and G strings forming some 6 note clusters. Just not humanly possible on one guitar (unless it was tuned way different or maybe Nashville strung).
Most of the sounds I find most beautiful are either choirs or orchestras. Sometimes it takes more than one person, working together, to get the best results.
All that said, Holdsworth"s stretches were insane. When I am near a guitar I’ll have to give the chords in that video a go and see how bad it hurts (or if I can even do them…). I had to do some crazy stretches in a few of the Barrios pieces I played long ago. Curious how they stack up to the man himself.