Board Thread:Editor Board/@comment-26391060-20140427072017/@comment-3551173-20140427100028

I think you were mistaken on the fact that it wasn't just clearing the chamber but also gaining audience with the Fairy King, which was rewarded with unlimited flight, but since it was set to be unclearable "in the game" but it could be perceived to be part of chain, it is still in the end a single part meant to act as an unclearable obstacle and therefore not part of any quest chain.