Who thinks the two plots are actually one? Anyone?

The temple part is 2007 and the plane/not crashing is in 2004 right? Instead of them being different realities are they somehow just different times of the same story?

Sorry this is really random. I would love to hear at the end of the series what exactly the writing process was. I’m just jumping on the Lost train so maybe I missed some kind of explaination. Did someone come up with a master plot first?

So hooked on Lost now.