It's better than bloodshed, to observe. Mine were on and off for several weeks until I separated them, but when they fought severely the older one lost half of his comb. Didn't at to risk any more injuries.
Up to that the old one stayed out go reach when he could and was kept at a distance by...
I had the same, for 1,5 years both roos got a long fine, one day on the other the youngster decided to pick a fight with the old one.
First I recognized not what happened cause he only stressed out in the coop, outside with much more space the were fine. The old one got very tired and I...