DL 514 then AA 4978 at Phoenix
Boston → Phoenix → Fresno
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
13:52AA 4978 to Fresno leaves the gate
15 h 59 apart on the timetable, overnight
AA 4978 leaves 15 h 59 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.