Thanks yyc, although Im not happy at least I know it isnt me losing my mind !What I found odd about this, and has me convinced that it has to be a form of blocking, is that although the one possible itinerary I looked at has a connection ie Knoxville to Lake Charles, the other Knoxville to Houston had (as of 2 hrs ago) 4 different non stops available on ANA but only 1 at the most has shown up at any time I've looked in the past 2 days on AP.