Originally Posted by Don'tGoThere
If the flight crosses the atlantic and conflicts with the same flight operating on that day, the late flight will be assigned a different flight number for operational purposes. Customers are not aware of this onboard (crew is aware) and a call to CO will provide the necessary parties with the correct information.
Thanks, I am aware numbering issue. But the question wasn't about flight number, it was about equipment. The delayed CO126 could have made its trek back and forth to Ireland and arrived back in EWR at close to 2115. Last night's CO126 wasn't scheduled to depart until after 10 p.m. There would have been no overlap and, hence, no need to renumber. The issue was that co.com wasn't posting accurate information about what happened to CO126--maybe they hadn't decided if they needed to renumber it. EWR was expecting it yesterday as CO126: CO just hadn't updated the website.