F9 1439 then AA 4267 at Phoenix
Salt Lake City → Phoenix → St Louis
Timetable, Phoenix time
00:18F9 1439 from Salt Lake City at the gate
19:56AA 4267 to St Louis leaves the gate
19 h 38 apart on the timetable
AA 4267 leaves 19 h 38 after F9 1439 arrives on the timetable: more than half a day, so not a connection we count.