UA 1565 then AA 3397 at DFW
Denver → Dallas-Fort Worth → Wichita
Timetable, Dallas-Fort Worth time
20:43UA 1565 from Denver at the gate
17:42AA 3397 to Wichita leaves the gate
20 h 59 apart on the timetable, overnight
AA 3397 leaves 20 h 59 after UA 1565 arrives on the timetable: more than half a day, so not a connection we count.