I have more modest cables than your Jena Labs (I have TARA Labs Master gen II) which also have separate + & - runs. There is some guidance in the manual about running then alongside each other (touching) & twisting them (a certain # of twists/ft) depending upon the coupling intended. I'll have to go back & read that again (I used to know it off the top of my head but not any longer!). Right now I have them running parallel & touching, which I determined was the best for my present needs.
FWIW.
FWIW.