AA 1107 then UA 2049 at DFW
Houston → Dallas-Fort Worth → Denver
Timetable, Dallas-Fort Worth time
16:09AA 1107 from Houston at the gate
11:40UA 2049 to Denver leaves the gate
19 h 31 apart on the timetable, overnight
UA 2049 leaves 19 h 31 after AA 1107 arrives on the timetable: more than half a day, so not a connection we count.