NAPA to pull and join list data from two different SPO site collections?

Looking at this sample code:

http://social.msdn.microsoft.com/Forums/sharepoint/en-US/ff935a1e-332b-4008-9e28-0d16d4188383/access-sharepoint-2013-lists-data-using-the-crossdomain-library-in-office-365-napa-tool

Has anybody ever used NAPA to join and display list data from two different site collections?  I'd pay money for code.

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