AA 6240 then AA 3058 at DFW
Grand Junction → Dallas-Fort Worth → Tucson
Timetable, Dallas-Fort Worth time
10:26AA 6240 from Grand Junction at the gate
22:37AA 3058 to Tucson leaves the gate
12 h 11 apart on the timetable
AA 3058 leaves 12 h 11 after AA 6240 arrives on the timetable: more than half a day, so not a connection we count.