UA 3691 then AA 3816 at DFW
Newark → Dallas-Fort Worth → Columbia Metropolitan
Timetable, Dallas-Fort Worth time
13:39UA 3691 from Newark at the gate
13:15AA 3816 to Columbia Metropolitan leaves the gate
23 h 36 apart on the timetable, overnight
AA 3816 leaves 23 h 36 after UA 3691 arrives on the timetable: more than half a day, so not a connection we count.