Lost producers say not to refer to the sixth season's unique narrative as an "alternate reality."

What do these flash sideways scenes mean, in that case? It's unclear, but we debate that topic in this week's Lost Round Table.

As for next Tuesday's episode, ABC has not released any synopsis or revealed any spoilers related to it. But we do have a clip!

In it, Kate is still on the run in 2004, as she forces a pregannt Claire out of the car. Watch below.

[video url="http://www.tvfanatic.com/videos/lost-clip/" title="Lost Clip"][/video]

We're curious to hear from readers: What do you think of this dueling timeline?

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.