You really need to go back to nature to seek answers for such questions.
In nature, how far would the next hive be? 100 yards or a quarter mile? How many hives would contribute to any particular DCA? Would drones of other far off hives, tend to be attracted to hives to be near and ready for mating? Sure.
We picture what happens many times in very unnatural circumstances when we as beekeepers place many hives in one area. Then try to rationalize that queen's fly this far, drones fly this far, etc. Which for me is nonsense.
Drones flood towards hives with virgins to increase the chances that the queen will mate with drone outside her genetic pool. Some have suggested that queens can tell her own drones and avoid them in mating. Others say that bees clean out cells that are laid with inbred eggs.
Inbreeding is not just about a queen mating with her own drones. It is about what happens when you flood an area with one genetics, and over time, the genetic stock is saturated by swarms, etc.
In nature, a virgin queen may attract drones from colonies over a couple mile wide area. They congregate in these hives, and this increases the chances that the virgin will not mate with her own drones. I think this whole "a queen flies this far (up to 5 miles now some are saying.....NOT!), or a drone flies this far" is widely exaggerated. a queen flies as far as she needs too. And when drones from colonies in the area all congregate inside this virgin queen hive, as nature dictates, why would she fly 5 miles?
It is only when we as beekeepers, keep huge groupings of hives in one area, that we need to rationalize and come up with ideas that fully contradict what actually happens in nature.
Will a queen fly two miles if she needs too! Yes. But it is that way in nature especially when the next hive may be far off. But they do not fly that far by some call of nature.