UA 1970 then KE 3644 at San Francisco
Cleveland → San Francisco → Atlanta
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
11:51KE 3644 to Atlanta leaves the gate
14 h 06 apart on the timetable, overnight
KE 3644 leaves 14 h 06 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.