UA 2438 then AA 1610 at Denver
Fargo → Denver → Charlotte
Timetable, Denver time
10:22UA 2438 from Fargo at the gate
10:12AA 1610 to Charlotte leaves the gate
23 h 50 apart on the timetable, overnight
AA 1610 leaves 23 h 50 after UA 2438 arrives on the timetable: more than half a day, so not a connection we count.