If it's a code share flight then BOTH numbers will be reflected on the board. and any other airline as well. Not sure how the CO boards look at IAH but at ORD the boards alternate with all the flight code numbers for any given flight. And the're still listed as such in APOLLO. They're listed in the OAG as well. so check all the sited because any or all have to change after the next update. It's NOT instanteneous as you guys suggest.