Groups kept separate have multiple adult males able to fully interact with hens present. Only behavior separates them, no pens or fences. Pecking order is evident most of time although harems with discrete yet contiguous territories also realized annually. Some strife each year but not requiring medical attention. We have acreage with complex habitat making all sorts of free-range keeping possible.
I have numerous postings and multiple threads to this effect. Behavior of chickens is very much of interest to me and this is not a fly-by-night venture. Look up the threads and you might learn a few things.
I know that which you refuse to acknowledge after observing chicken behavior for more than 30 years. No thanks.