AA 1849 then AA 3947 at DFW
San Francisco → Dallas-Fort Worth → Houston
Timetable, Dallas-Fort Worth time
18:23AA 1849 from San Francisco at the gate
17:26AA 3947 to Houston leaves the gate
23 h 03 apart on the timetable, overnight
AA 3947 leaves 23 h 03 after AA 1849 arrives on the timetable: more than half a day, so not a connection we count.