AA 2574 then AA 3430 at Phoenix
St Louis → Phoenix → Yuma
Timetable, Phoenix time
10:32AA 2574 from St Louis at the gate
22:59AA 3430 to Yuma leaves the gate
12 h 27 apart on the timetable
AA 3430 leaves 12 h 27 after AA 2574 arrives on the timetable: more than half a day, so not a connection we count.