Two New Paintings...or a Diptych?

I can't decide whether this is two paintings or one diptych?

Painting #1:

I took a photo of it in black and white -- to make sure there was balance:

And here are some details:

Painting #2:

And a photo in black and white to check the balance and composition without the clutter of color:

And some details:

And here are the two paintings together:

What do you think?  Do they belong together or perfectly fine apart?

I'd love to know!