AA 3685 then AA 6220 at DFW
Amarillo → Dallas-Fort Worth → Cedar Rapids
Timetable, Dallas-Fort Worth time
08:25AA 3685 from Amarillo at the gate
21:31AA 6220 to Cedar Rapids leaves the gate
13 h 06 apart on the timetable
AA 6220 leaves 13 h 06 after AA 3685 arrives on the timetable: more than half a day, so not a connection we count.