CM 2458 then DL 1077 at San Francisco
Sacramento → San Francisco → Austin
Timetable, San Francisco time
18:57CM 2458 from Sacramento at the gate
17:59DL 1077 to Austin leaves the gatealso KE 3278
23 h 02 apart on the timetable, overnight
DL 1077 leaves 23 h 02 after CM 2458 arrives on the timetable: more than half a day, so not a connection we count.