OK, one of my hives swarmed. Silly me but I've learned a lesson. They were hiding the queen cells in the very bottom box - absolutely no queen cells in any of the boxes above the first - and in an attempt to leave them alone as much as possible, I failed to find the queen cells and take action in time.
I've went through the 2nd hive and made sure I opened up the brood's nest. I'm going to take a look at it again tomorrow (a week later) and make sure it's not interested in swarming and that they aren't back-filling the brood's nest.
The week hive, the one that produced a swarm, left maybe 50% of the bees - and they have a few queen cells ..using bee math, I should see eggs about July 17th. It is not as strong as the second hive - but there was LOTS of brood ...everything from 4days very small larvae to close to 20days capped (as of a week ago).
Should I swap the two hives or should I leave them bee and let them grow out themselves? Any other options?
Thank you all!