here are the results of brooded up OAV, brood break form 26 days caging, and OAV with a brood break form 26 days cagingThe only advantage in the colony is if they receive a treatment of some sort when all mites become phoretic.
The problem is the same as we saw in ross conrads brood break work.. it can work and keep the bees alive, but the honey production tanks at that point why keep bees https://projects.sare.org/project-reports/fne16-840/
saying a brood break doesn't have a impact is like saying mite bombs don't exist or impact hives .. It just doesn't follow the science and field experience.
arguably a break isn't enuff in many places, you need more... be it devideing the mite load , resistant stocks, using a traping comb, etc..
but at that point, you propping up poor stocks just like treatments