DL 514 then AA 4154 at Phoenix
Boston → Phoenix → Carlsbad McClellan-Palomar
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
21:35AA 4154 to Carlsbad McClellan-Palomar leaves the gate
23 h 42 apart on the timetable, overnight
AA 4154 leaves 23 h 42 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.