Originally Posted by wideman
That is correct.
I really would encourage you to read carefully
the OWE rules, as they answer virtually all of the questions that you have posed.
Pay particular attention to the "Routing" section of the rules. In this case, rule #8 in that section says "INTERMEDIATE SURFACE SEGMENTS PERMITTED." However, you must read all of the rules, because you could not go to HNL and then take your next flight from SYD or HKG (Routing rule 1: "TRANSOCEANIC SURFACE IS NOT PERMITTED").
Wideman is correct in theory but your example is a major exception. Because of an unrelated rule, once youre in HNL you can *only* leave from HNL (or another Hawaiian island). You cant do an open jaw to or from HNL *anywhere* but otherwise open jaws are generally allowed save exceptions like wideman pointed out.