Originally Posted by
avidflyer
Same flight # = 1 segment.
Yup. If it is a continuation of flight number then it is one segment. In the case of the OP, it will be 3 segments not the 5.
NB: a through flight number does not mean the same
plane will be used. More often than not a through flight will be a change of equipment which means upgrades are harder, seat assignments are harder etc.