AA 3232 then UA 1259 at Houston
Phoenix → Houston → Pittsburgh
Timetable, Houston time
23:54AA 3232 from Phoenix at the gate
20:05UA 1259 to Pittsburgh leaves the gate
20 h 11 apart on the timetable, overnight
UA 1259 leaves 20 h 11 after AA 3232 arrives on the timetable: more than half a day, so not a connection we count.