WN 4187 then AA 501 at Phoenix
St Louis → Phoenix → Mexico City
Timetable, Phoenix time
14:35WN 4187 from St Louis at the gate
11:42AA 501 to Mexico City leaves the gate
21 h 07 apart on the timetable, overnight
AA 501 leaves 21 h 07 after WN 4187 arrives on the timetable: more than half a day, so not a connection we count.