AA 2349 then AS 257 at Boston
Phoenix → Boston → Seattle
Timetable, Boston time
16:45AA 2349 from Phoenix at the gate
16:33AS 257 to Seattle leaves the gate
23 h 48 apart on the timetable, overnight
AS 257 leaves 23 h 48 after AA 2349 arrives on the timetable: more than half a day, so not a connection we count.