AS 255 then DL 514 at Boston
San Diego → Boston → Phoenix
Timetable, Boston time
05:46AS 255 from San Diego at the gate
18:10DL 514 to Phoenix leaves the gate
12 h 24 apart on the timetable
DL 514 leaves 12 h 24 after AS 255 arrives on the timetable: more than half a day, so not a connection we count.