AA 577 then F9 3726 at Denver
Dallas-Fort Worth → Denver → Cincinnati
Timetable, Denver time
22:27AA 577 from Dallas-Fort Worth at the gate
10:45F9 3726 to Cincinnati leaves the gate
12 h 18 apart on the timetable, overnight
F9 3726 leaves 12 h 18 after AA 577 arrives on the timetable: more than half a day, so not a connection we count.