They were separate from my flock for the duration of their brooding. Both were housed under the house in side by side medium dog crates, under artificial light. I moved them there on their third day of brooding. They had no visual or physical contact with any other birds, though they could hear my Ko Shamos in the same room as them.
I already confiscated the eggs and chicks from them. One Eye almost killed one of the hatchlings, she was also sitting on it with her leg and it was almost completely out of the shell but totally encased in its membrane still. I ended up with 5 chicks from 10 eggs, 3 Booted Bantam and 2 Silkie. Not awful but yikes... not gonna let those momma's brood again. Not sure what went wrong but I'm not really inclined to attempt it twice so I can find out. Mommas are now back in the bantam pen and chicks are all doing well in the brooder. Got some very weird chicks from those eggs, not sure how Black Copper split for Mottled X what I think is a Paint = Lavender but OK.
Well, I guess it's like Forrest Gump said, "you never know what you're gonna get." Guess it's that way with chickens, brooding, hatching, and chicks. You'll get better at determining what is gonna work best in the future. It amazes me every time I learn yet another new thing about chickens or my particular group of hens.