AA 1915 then AA 566 at DFW
Richmond → Dallas-Fort Worth → Denver
Timetable, Dallas-Fort Worth time
19:40AA 1915 from Richmond at the gate
18:44AA 566 to Denver leaves the gate
23 h 04 apart on the timetable, overnight
AA 566 leaves 23 h 04 after AA 1915 arrives on the timetable: more than half a day, so not a connection we count.