Another question - simply put, why don't they just sell this routing as an already-configured PBI-ISP (via BWI) itinerary? Isn't 40 minutes enough to make a connection in BWI? I assume it's because it involves catching the last BWI-ISP flight of the night and they probably don't want to risk stranding pax in BWI when there are several other options to get from PBI to ISP (three non-stops) during other times of the day. But it would be perfect for this situation - two of the three PBI to ISP non-stops are sold out on 1/21. WN scheduling planners are you listening?!!