DL 514 then AA 3878 at Phoenix
Boston → Phoenix → Monterey
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
21:45AA 3878 to Monterey leaves the gate
23 h 52 apart on the timetable, overnight
AA 3878 leaves 23 h 52 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.