UA 1970 then LH 455 at San Francisco
Cleveland → San Francisco → Frankfurt am Main
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
14:45LH 455 to Frankfurt am Main leaves the gatealso NZ 4221, SN 7249, OS 7326, UA 8828
17 h apart on the timetable, overnight
LH 455 leaves 17 h after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.