Question about epics and Nagafen/Vox booting

[Nekron99]

Ok so something I've never quite gotten about EQs epic quests was the fact that in order to have a chance at getting an item for an epic quest. Many players classes had to kill and loot successfully, Nagafen or Vox. What I don't get is this. I have read all over that these bosses boot you after level 52 like you literally cannot engage them or you're booted from the fight/zone. Yet I've heard of people completing these epic quests past that level. Many times in fact. How exactly does this work? Can anyone explain this to me? Naggy and Vox are my favorite bosses in all of EQ (aside from Kerafyrm of course) and if I have even a slight chance to kill them past those levels I wanna know how it works, or just how the whole epic quest line is done past 52 at all. Thanks!