I’ve had roosters in my flock, both now (restarting with chickens after years of none) and in years passed. Most recent experiment was two roos (hatchmates) and ten pullets. it worked fine for a long time, maybe 7 months of peaceful coexistence, but a few weeks ago, one of my two boys gradually turned into a jerk. He couldn’t leave the pullets alone, kept them from eating and was constantly sizing up my alpha roo, who was my pick of the 8 I raised to save for breeding. A couple of weeks ago, he got shipped off to freezer camp. I’ve had more than one roo in a flock before, I’ve also had times like this where one was all that could could stay. I think there is much to be said for the individual personalities of the animals in question. My current alpha roo is super laid back and mellow. If both were of that temperament, it probably would have worked out fine. I also didn’t want the more aggressive of the two to pass on his genes, so he had to go. The only way I find out is to try it and see what happens... sorry, not much help in that answer, but it’s all I have.