Well, as previously reported, I was concerned about the smaller brood (the swarm control brood) which was not thriving. I hoped they might get a move on but they have gone in the other direction. Clearly the queen has stopped laying or she has been knocked off by something. I opened the hive and all was very quiet. A scattering of bees on the super, but no comb built out there, and underneath in the brood box the brood frames were mostly uncapped and empty, with a sparse few capped and emerging young and really very few bees in the hive at all. The colony is dying and will be all done in a week or two.
But next door - and this may be connected - is total frenzy. Two whole supers of capped honey and thousands of bees coming and going. I watched them carefully and noticed some flying out of the big hive, up, and back into the entrance of the other hive. Normally this would be met by a hoard of sentry bees who would tackle the intruder and kill it. But as it is such a weak colony there are none defending. So I think they have been raiding the other hive.
Brutal. But at least the big one should survive winter.