In watching the trailer I have come to believe that the start with the dragon flying is a different location then when Dovakiin is running through the woods and fighting the dragon on the cliff. I think this because when you look at the scene from the dragon's perspective you can see what looks like a cliff or steep mountain a head. Look at 17 seconds in the gameplay trailer to see what I mean.

And?

I don't know I just thought it was interesting that Beth shows a scene that appears like it is supposed to link to the other dragon scenes but it is in a different part of Skyrim.

i think it's more interesting than when the player is running through the woods the sun is obviously in front of him, but once he hits the cliff it's behind him.

(i.e. not interesting at all)

they were pieced together to look cool, not to provide some convincing self-contained narrative.

I like this kind of stuff because it lets you see the whole of Skyrim a little better.
Also it goes to show that those scenes were not cinematic.