AA 1820 then AA 6238 at DFW
Ontario → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
15:35AA 1820 from Ontario at the gate
08:25AA 6238 to Amarillo leaves the gate
16 h 50 apart on the timetable, overnight
AA 6238 leaves 16 h 50 after AA 1820 arrives on the timetable: more than half a day, so not a connection we count.