Any chance that Googlebook OS becomes one with pixel desktop mode or integrates into Dex?

Sorry if this has been mentioned before but I did not see anything. When I saw googlebook first announced my mind instantly went to the OS being built on top of android and not the concept of a google laptop. If phones running android can run the entire googlebook interface I feel like this would be a game changer. I use Dex all the time but its still not perfect and lacks some basic things that make it truly feel like a desktop OS. The other thing holding dex back is lack of apps with a true desktop interface which googlebook may actually help push. I dont care about the laptops yet personally but if it can be integrated into pixel phones or any android phones I just think this would be such a win. Do you see anything like this happening or has google stated this will remain a totally separate branch of android development never to mix?

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