AA 2856 then AA 3837 at DFW
Spokane → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
18:40AA 2856 from Spokane at the gate
13:10AA 3837 to Amarillo leaves the gate
18 h 30 apart on the timetable, overnight
AA 3837 leaves 18 h 30 after AA 2856 arrives on the timetable: more than half a day, so not a connection we count.