jen, sometimes without queen excluders the queens will lay up in them, the first honey super.... sometimes you discover this and put an excluder on to find later you have two queens. one upstairs, one downstairs, not saying how i discovered this.......
but, i do think from jb's posts, he may have been taking advantage of the queen laying up in his honey supers with fresh eggs, nucs were made with the frames for the bees to make their own queens, just my guess, and when jb gets back in here......oh jb!!!! hello!!!!.....