AA 1515 then DL 514 at Phoenix
Cincinnati → Phoenix → Boston
Timetable, Phoenix time
10:00AA 1515 from Cincinnati at the gate
23:23DL 514 to Boston leaves the gate
13 h 23 apart on the timetable
DL 514 leaves 13 h 23 after AA 1515 arrives on the timetable: more than half a day, so not a connection we count.