UA 1970 then DL 1715 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
14:47DL 1715 to Los Angeles leaves the gatealso AF 2778, LA 6420
17 h 02 apart on the timetable, overnight
DL 1715 leaves 17 h 02 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.