Aside from the "package hive" being my personal one, 30 minutes away from the other hive in question... I think this will help.
I just hope by now the big Hive hasn't prepped any Queen cells yet and gone into "stubborn mode" about making more should I remove them.
Am I to assume that if that is not the case as of yet, removing brood would affect them such that it will keep them from swarming, despite their immediate population numbers?