I'm thinking about taking a flight from Denver to London. One that looks good for my needs is United flight 958, which goes from Denver to Chicago, then Chicago to London.

Checking United's web site, today (7/23) that flight arrived at gate C10, but it scheduled to leave from C18. Both legs are on a 777. I'm thinking that a plane change, from one 777 to another is required.

Where the flight has the same flight number, does that count as one flight segment or two? It seems only fair to me to count it as two flight segments, since the plane lands in Chicago. The fact that I would have to get off one airplane and on to another seems like another good reason to count it as two segments.

Anybody had experience with this or similar flights where the same flight number is used (with or without an aircraft change)?