DL 1091 then UA 2179 at San Francisco
Salt Lake City → San Francisco → Los Angeles
Timetable, San Francisco time
23:59DL 1091 from Salt Lake City at the gatealso VS 4542
22:50UA 2179 to Los Angeles leaves the gatealso VA 8051, NZ 9254
22 h 51 apart on the timetable, overnight
UA 2179 leaves 22 h 51 after DL 1091 arrives on the timetable: more than half a day, so not a connection we count.