Blender as a VSE - can I separate my editing into multiple scenes and render as single video? I'm using blender just for the VSE functionality.  As such, I have created two scenes each with some movie clips.  I'm trying to render the output into a single movie using: 

blender -b demo2016.blend \
        -S 01_Scene -s 1 -e 13 -a \
        -S 02_Scene -s 1753 -e 1760 -a


(From: Is there a way to batch render multiple scenes?)

In the properties window for each scene, the option 'Overwrite' is not ticked.

However, only the second scene is output to the final video.  Is this the correct approach?
In the end, I solved this by creating a final Scene (which I called 'All_Scenes') and then adding the other Scenes as Scene strips in the VSE (Header menu: Add >> Scene).  In the scene properties, I had to configure the rendering to output as mp4.

In the Scene properties, I had to ensure the 'Use Sequence' property was ticked.

I could then render the scene with:

 blender -b demo2016.blend -S All_Scenes -a