AZ 614 then DL 514 at Boston
Rome → Boston → Phoenix
Timetable, Boston time
13:45AZ 614 from Rome at the gate
08:35DL 514 to Phoenix leaves the gate
18 h 50 apart on the timetable, overnight
DL 514 leaves 18 h 50 after AZ 614 arrives on the timetable: more than half a day, so not a connection we count.