WN 471 then UA 370 at Phoenix
Tucson → Phoenix → Chicago O'Hare
Timetable, Phoenix time
19:05WN 471 from Tucson at the gate
18:20UA 370 to Chicago O'Hare leaves the gate
23 h 15 apart on the timetable, overnight
UA 370 leaves 23 h 15 after WN 471 arrives on the timetable: more than half a day, so not a connection we count.