UA 1970 then KL 606 at San Francisco
Cleveland → San Francisco → Amsterdam
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
13:50KL 606 to Amsterdam leaves the gatealso VS 7144, AF 8403, DL 9647
16 h 05 apart on the timetable, overnight
KL 606 leaves 16 h 05 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.