AA 3746 then AA 1915 at DFW
Billings → Dallas-Fort Worth → Richmond
Timetable, Dallas-Fort Worth time
11:05AA 3746 from Billings at the gate
10:34AA 1915 to Richmond leaves the gate
23 h 29 apart on the timetable, overnight
AA 1915 leaves 23 h 29 after AA 3746 arrives on the timetable: more than half a day, so not a connection we count.