UA 321 then DL 2419 at Phoenix
Chicago O'Hare → Phoenix → Seattle
Timetable, Phoenix time
12:24UA 321 from Chicago O'Hare at the gate
12:15DL 2419 to Seattle leaves the gate
23 h 51 apart on the timetable, overnight
DL 2419 leaves 23 h 51 after UA 321 arrives on the timetable: more than half a day, so not a connection we count.