AA 3552 then AA 1363 at DFW
Midland → Dallas-Fort Worth → St Louis
Timetable, Dallas-Fort Worth time
06:26AA 3552 from Midland at the gate
12:43AA 1363 to St Louis leaves the gate
6 h 17 apart on the timetable
The last days
AA 3552 and AA 1363 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.