When several drones are tethered to one collar, can you prove their cables won't tangle or jam? Jamming is the hard part, because friction remembers where the cables have been. Fly a drone out and back in this toy model: it comes home, but the crossing may not.
In simulations I ran in DisMech, an open-source rod engine, the ends of two crossing cables weren't enough to predict what they did next, but in that model, for the slow routes I tested, the crossing's position was.