DL 514 then AA 4144 at Phoenix
Boston → Phoenix → Ontario
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
15:56AA 4144 to Ontario leaves the gate
18 h 03 apart on the timetable, overnight
AA 4144 leaves 18 h 03 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.