UA 1478 then AA 3232 at Phoenix
Edmonton → Phoenix → Houston
Timetable, Phoenix time
18:47UA 1478 from Edmonton at the gate
13:43AA 3232 to Houston leaves the gate
18 h 56 apart on the timetable, overnight
AA 3232 leaves 18 h 56 after UA 1478 arrives on the timetable: more than half a day, so not a connection we count.