I am not sure whether the act of ferrying people into the last quest of Duncan elite dungeon is a bug or a game mechanism.
here is how it works.
the Duncan's door will not be made accessible unless the other 4 quests have been done.
however the whole team can be ferried to Duncan if there is only 1 person in the team who have killed all the other 4 quests....
which makes this a very good economical opportunity for that person who had done the 4 quests, not trying to killing off Duncan, and keep on ferrying people into the Duncan's room..
this is manifested by people in Umbral Grotto, advertising ferry trips to Duncan , pricing around 1-2k per person in the team.
the run will generally take less than 4-5 minutes, and that person will be able to earn around 7-14k per run if there are a lot of groups going in.
However it seems to me this is not the same for chap 2's elite mission or other kind of ferrying, because Duncan can be killed in this way, very quick and the Hierophant's Chest can be exploited many many times, without going through the so called "whole elite dungeon" quest.
I just wonder, if that is okay for this kind of ferry to be continued.
l

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