Re: Late Swarm - need advice
From what I've seen with swarms, I'd feed both. I had several get away from me this spring (DOH!) and the little boogers nearly drained the reserves of the parent hive on the way out the door. I even had one swarm (not mine) that I went and caught. I brought them home and put on a feeder. They drained it and absconded. Seems to me, in preparations for swarming, the swarming bees will take as much as they can with them. And t makes sense.
Upon arriving at a new location, they need to set up show FAST! So they need a lot of resources to do that. You'll notice that in the first week or so your swarm will build a lot of comb, as much as they can based on resources, so the queen can start laying. Better get some more frames in there too, or they'll pull natural combs from the inner cover than you think possible.
The best answer (IMHO) as to whether or not to feed the parent hive is to do an inspection. If you find a bunch of cleaned out honey stores (courtesy of the swarm) then yes, FEED! However, if you find their stores pretty full, possibly dangerously full bordering on honey bound, then don't feed. As long as you don't get them honeybound, I don't really see too much harm in feeding both. Best of luck!
One package to 4 hives in 3 months. After 12 months I'm over a dozen hives and growing. Head over heels for bees!!!