CM 2457 then AA 491 at San Francisco
Sacramento → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
21:41CM 2457 from Sacramento at the gatealso AC 4533, UA 5961, VA 8183
17:01AA 491 to Dallas-Fort Worth leaves the gatealso QR 2259, QF 3120, BA 6540
19 h 20 apart on the timetable, overnight
AA 491 leaves 19 h 20 after CM 2457 arrives on the timetable: more than half a day, so not a connection we count.