DL 514 then AA 840 at Phoenix
Boston → Phoenix → Charlotte
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
15:16AA 840 to Charlotte leaves the gate
17 h 23 apart on the timetable, overnight
AA 840 leaves 17 h 23 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.