Aipotu
SBH Insider
what tradewind airlines is saying is : most of the time there is not a time stamp on the sample that is taken , only a date the sample is taken, that is why they are using the 3 day rule. an example, you get a nasal swab test on tuesday at anytime, the specimen is marked only with the date the specimen was taken, not the time. then your flight with tradewind airlines could be at 4:30 out of sju on friday, you are technically within the 72 hour rule.
Just to clarify -- the test results are presented when you get on the connecting flight, or when you go through immigration at SBH? (That said, the "third day" rule is much less stress-inducing than 72 hours, especially if one arrives on the island late afternoon!)