UA 1970 then WN 2791 at San Francisco
Cleveland → San Francisco → Los Angeles
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
15:50WN 2791 to Los Angeles leaves the gate
18 h 05 apart on the timetable, overnight
WN 2791 leaves 18 h 05 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.