Bulldog King is correct. If a flight originates internationally and stops over in the US, the 2nd leg will show Business rather than first.

As for the flight showing a 762 on the seating chart. This is a programming error. There are several flights I have been on that show this and it is in fact a 764. If it shows 36 FC seats up front and Coach starts with 17 it is for sure a 764.