I have a flight TLV scheduled for next Feb from SEA on CO, have already had two schedule changes IAH/EWR a miss connect so had to have that flight rescheduled to connect with the TLV flight was something like 2230 now 2030 and flights from EWR to SFO to YVR on the return did have CO flight numbers operated by UA and now they have UA flight numbers. Was told by the CO agent that all tickets with CO flight numbers will have to be issued, probably after Nov 1 as CO will disappear. Also told to be prepared for more flight schedules as this is only the beginning. By the way the CO agent was extremely helpful and pleasant.