DL 514 then AA 3873 at Phoenix
Boston → Phoenix → Monterey
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
14:35AA 3873 to Monterey leaves the gate
16 h 42 apart on the timetable, overnight
AA 3873 leaves 16 h 42 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.