All these records; Hound however is harder when it takes longer.
I'm under the impression from chatting a while ago that it may well have been done, in which case I would love to hear/see.
If it hasn't - how long can you go? I imagine over time the spawns form a pattern that if you came up with a good takedown method you could go pretty much continuously with the right party setup to renew resources. So if anyone knows details of spawns I would be interested in this as a theoretical exercise if no one has done this/has the time (everyone beta-ing or preparing for xpn etc).