AA 6197 then UA 2318 at Houston
Dallas-Fort Worth → Houston → St Louis
Timetable, Houston time
11:32AA 6197 from Dallas-Fort Worth at the gate
14:40UA 2318 to St Louis leaves the gate
3 h 08 apart on the timetable
The last days
AA 6197 and UA 2318 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.