AA 4123 then AA 3443 at DFW
Grand Junction → Dallas-Fort Worth → Springfield
Timetable, Dallas-Fort Worth time
16:25AA 4123 from Grand Junction at the gate
17:10AA 3443 to Springfield leaves the gate
45 min apart on the timetable
The last days
AA 4123 and AA 3443 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.