Nice clarifying and explanation.
I have gotten smacked by a rope, and suspect that is what broke the living room window.
The big ones for giant dogs are wrapped pretty damn tight and solid, but the frayed ends past the knots could easily be chewed off. Mine seem to just use them for tug and wrestling matches and to whip around. I have never really seen one sitting down and gnawing on them.
It takes about 2 minutes for my pit to shred one to little pieces.
That said, my dogs love playing with rope type toys, so I let them just with close supervision. Last night the Dogo played a light hearted game of "toss the puppy" by getting her to grab the rope and tug against him, then he'd just fling her across the living room. it was pretty funny.