Yeah, and then the ending remains just as ambiguous in the question of whether or not Origin merged the worlds or just recreated them and sent them on their way.
I thought it was clear from some exposition somewhere that the worlds were recreated again and split for a time, destined to eventually merge again, but Noah retained something from his connection to Mio that allowed him to find his way to Alrest. He disappears when the birds on the screen obscure him from vision in the final scene. If the worlds were merged, it wouldn't have been portrayed as being spirited away.
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http://i.imgur.com/LabbRyN.jpg raytan and Kana are on opposite ends of the Awesome Spectrum.