AA 2103 then AA 558 at DFW
St Louis → Dallas-Fort Worth → Salt Lake City
Timetable, Dallas-Fort Worth time
10:38AA 2103 from St Louis at the gate
17:15AA 558 to Salt Lake City leaves the gate
6 h 37 apart on the timetable
The last days
AA 2103 and AA 558 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.