If you have the same city pairs, but operate a later flight with a different flight number – is that an exception to the reassignment premium?

Q: If you have the same city pairs, but operate a later flight with a different flight number – is that an exception to the reassignment premium?

No. The exception is when you fly the exact same flight (i.e., same city pairs and same general time) but just the flight number changes. It is not referring to flying a different flight completely, which would be a reassignment even if the city pairs are the same.