What I'm confused about is what was actually going on with Dan and Charlotte in the chamber where they confronted Juliette..So their order was to activate the release of some toxic gas to get to Ben, or 'stop' him (?)..Or was it Ben's plan as a last resort from Widmore's intervention, and Daniel & Charlotte, being aware of it, wanted to prevent it? And Juliette, was first asked to kill the two to avoid the massive poisoning, right? But then she didn't. ??

By the way, I'm disappointed not to see Richard Alpert when people want to play around deadly chemicals. I thought he was to show up at some point..

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"Bear...? Is that you?"-- Hurley S03E4