AA 2856 then AA 3984 at DFW
Spokane → Dallas-Fort Worth → Rapid City
Timetable, Dallas-Fort Worth time
18:40AA 2856 from Spokane at the gate
11:13AA 3984 to Rapid City leaves the gate
16 h 33 apart on the timetable, overnight
AA 3984 leaves 16 h 33 after AA 2856 arrives on the timetable: more than half a day, so not a connection we count.