Haha, you just made me realize that "The City and the City" by China Miéville[1] could be used as a metaphor for such artificially divided organizations like the one you had (and many have - for better or worse reasons).
[1] http://amzn.to/29MWd3v [amazon affiliate link - just an experiment]
https://www.amazon.com/City-China-Mi-ville-ebook/dp/B003E2UQ... [Non-affilate link - to be a little more courteous ;-) ]
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Haha, you just made me realize that "The City and the City" by China Miéville[1] could be used as a metaphor for such artificially divided organizations like the one you had (and many have - for better or worse reasons).
[1] http://amzn.to/29MWd3v [amazon affiliate link - just an experiment]
https://www.amazon.com/City-China-Mi-ville-ebook/dp/B003E2UQ... [Non-affilate link - to be a little more courteous ;-) ]