AA 3232 then UA 3881 at Houston
Phoenix → Houston → Chicago
Timetable, Houston time
23:54AA 3232 from Phoenix at the gate
22:00UA 3881 to Chicago leaves the gate
22 h 06 apart on the timetable, overnight
UA 3881 leaves 22 h 06 after AA 3232 arrives on the timetable: more than half a day, so not a connection we count.