AA 9909 then WN 3526 at Phoenix
Salt Lake City → Phoenix → St Louis
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
11:20WN 3526 to St Louis leaves the gate
20 h 50 apart on the timetable, overnight
WN 3526 leaves 20 h 50 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.