AA 1820 then AA 3816 at DFW
Ontario → Dallas-Fort Worth → Columbia Metropolitan
Timetable, Dallas-Fort Worth time
15:35AA 1820 from Ontario at the gate
13:15AA 3816 to Columbia Metropolitan leaves the gate
21 h 40 apart on the timetable, overnight
AA 3816 leaves 21 h 40 after AA 1820 arrives on the timetable: more than half a day, so not a connection we count.