i've made a connection in 20 minutes at hnl, but everything was working just right. the wiki wiki was right outside and took off immediately, and we walked on last on the inter-island. cross fingers. if not, shouldn't be a big deal (unless it is a day when everything is sold out).
i've always eventually made it home to kauai on the same day, although there have been a few times when everything was sold out and i was on waitlist, when i thought i'd surely have to stay in hnl overnight.