AA 4073 then AA 5418 at DFW
Champaign → Dallas-Fort Worth → Harlingen
Timetable, Dallas-Fort Worth time
09:47AA 4073 from Champaign at the gate
21:48AA 5418 to Harlingen leaves the gate
12 h 01 apart on the timetable
AA 5418 leaves 12 h 01 after AA 4073 arrives on the timetable: more than half a day, so not a connection we count.