UA 1388 then AA 3816 at DFW
Houston → Dallas-Fort Worth → Columbia Metropolitan
Timetable, Dallas-Fort Worth time
16:07UA 1388 from Houston at the gate
13:15AA 3816 to Columbia Metropolitan leaves the gate
21 h 08 apart on the timetable, overnight
AA 3816 leaves 21 h 08 after UA 1388 arrives on the timetable: more than half a day, so not a connection we count.