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Thread: Does XN class include X?
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Old Sep 10, 2011 | 3:53 pm
  #3  
star_world
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Join Date: Jan 2001
Location: ORD / DUB / LHR
Programs: UA 1K MM; BA Silver; Marriott Plat
Posts: 8,240
Originally Posted by sbm12
My understanding is that X is a subset of XN and that I is a subset of O so that there are no scenarios where a non-elite seat will open but an elite one will not.
Great - thanks a lot.
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