AA 1591 then DL 514 at Phoenix
Ontario → Phoenix → Boston
Timetable, Phoenix time
08:58AA 1591 from Ontario at the gate
23:23DL 514 to Boston leaves the gate
14 h 25 apart on the timetable
DL 514 leaves 14 h 25 after AA 1591 arrives on the timetable: more than half a day, so not a connection we count.