1. I think Desmond knew what happened when the button wasnt pushed but didn't know the "final" outcome. So that is why he was curious.
2. Kelvin either got lucky in finding him on the shore or was instructed to be at a certain location because the boat was dragged there purposley.
3. These two characters might have some wierd slight connection or the same story plot lol who knows...
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"You Don't Even Know What Your Running From!"-Jack
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