@adagna, @Dawn_SD. I walked out to the hive to check but, it has cooled off and the bees were not going it (6pm where I am at). I am 95% confident it was ventilation and not pherimone fanning, as I am 90% sure zero butts were raised and 100% sure all fanning was right next to the holes in the entrance reducer .
It even looks like bees are trying to chee the wood around the entrance o make it bigger.
For the sake of expediting this discussion, let us assume they were fanning for ventilation.