When you cut sentence from here and there, I do not know what I contradict.
After 30 years I have still to learn.
I wondered 2 years agi, why the hives do not eate pollen patty. Last spring the same thing.
Finally it cleared out, that bad weathers influence so strong to bees' insticts, that they put save mode on and do not feed larvae and the queen. When sun started to shine anf they went to gly outside, they started patty consuming.
There are some bee strains like Elgon bee, which do not mind about weather. They rear their brood as much as they can. Same was Norton's Buckfast bees from Cyprus.
Yes. Complex thing that brood acceleration.
When I reared several nucs with patty in late Summer, all 6 nucs got nosema in winter and none survived. Same happened to 5 good nucs, when they got nectar from balsam, but they did not get good pollen from othet plants.