I don't think two queens....especially virgins....will occupy a cage together. One would be dead in short order.
That's the truth. Did you ever put two virgins together? We did this at EAS one year...put them in a large petrie dish. Fought to the death every time. One battle lasted 20 minutes. We also put multiple mated queens together in a cage...for days...and they never fought. And I added a virgin to a cage with a mated queen...no not on purpose. That mated queen never knew what hit her.....especially virgins....