Well the hen with the big BF issue, it will come back. My vet wanted three months with no male contact. That's not including the two months she has already been away from him. Not saying that's how long you have separate yours. Just just trying to give an example. As for the hen with the bad neck, I would say a month. That neck has to really heal or it's not going to better.
Maybe do a night time separation. That will give the gals a break and can sleep in peace
Maybe do a night time separation. That will give the gals a break and can sleep in peace