Y4 800 then AA 5418 at DFW
Mexico City → Dallas-Fort Worth → Harlingen
Timetable, Dallas-Fort Worth time
09:44Y4 800 from Mexico City at the gate
21:48AA 5418 to Harlingen leaves the gate
12 h 04 apart on the timetable
AA 5418 leaves 12 h 04 after Y4 800 arrives on the timetable: more than half a day, so not a connection we count.