AA 2414 then UA 2651 at DFW
Washington → Dallas-Fort Worth → Denver
Timetable, Dallas-Fort Worth time
19:53AA 2414 from Washington at the gate
18:43UA 2651 to Denver leaves the gate
22 h 50 apart on the timetable, overnight
UA 2651 leaves 22 h 50 after AA 2414 arrives on the timetable: more than half a day, so not a connection we count.