Isn't that what I explain after the timestamp you mention? If I would keep it very basic: 120 or above enlarges the forces on the anchorpoints 90 is easy to recognize and gives a nice distribution of forces. Anything below 60 distributes the load even better than 90 and could be to close together for proper load distribution. But that is situation dependant. These are not hard set numbers and up to the Level 3 to make a conscious well thought out decision on. Does that answer your question?
Well I could but to answer your question I would neem more information. And I am not a specialist in rope rescue. I do understand the principles. I would say that the safety factors are the same as in normal rope access work. BUUTTTT ….. Different industries might approach things differently. Rope rescue in an oil and gas setting might be different to rope rescue by a mountain rescue team. Even so in the fall 22 I will be releasing the first videos on that subject.