Looks like I can match DL Silver over to CO Silver, and when CO combines into UA in 2012 it seems like UA won't know about the match with CO and you could do another match with UA down the road.. though no one really knows.

Now, if I match today looks like I'll be CO Silver through Feb 2012. Though if I wait a few days and match in Jan 2011 would it go through Feb 2013? Me thinks that I may have to wait until after June or July of 2011 as those seem to be the months people report getting the additional year and then it may be good through Feb 2013. Thoughts? I do have a CO flight in March so may not wait that long to find out.