Whether HNL is a part of the U.S. was neither implied nor is the issue. Doesn't matter how many times you check the status of HNL, the issue is not related to HNL.
What doesn't matter?
An Y itinerary (HNL-MSP-ATL) continued on to, say AMS, would grant him access to a World Club even if he had been on WBC cabin/ It would be an international itineary. He would have to be an Elite Plus to get access to a WC even if he were oon an international itinerary.