It seems they can split / combine during the day, especially mid day slow times.
Normally for pickup is BW, then Swan, then Dolphin, then pàrk.
Normal dropoff is park then BW, then S then D.
But a combined route is:
Pickup and return is: S then D then Yacht then Beach then BW.
And, if there happens to be a thunderstorm near DHS, you get a combined bus or take the path..