AA 3770 then AA 3058 at DFW
Grand Junction → Dallas-Fort Worth → Tucson
Timetable, Dallas-Fort Worth time
10:14AA 3770 from Grand Junction at the gate
22:37AA 3058 to Tucson leaves the gate
12 h 23 apart on the timetable
AA 3058 leaves 12 h 23 after AA 3770 arrives on the timetable: more than half a day, so not a connection we count.