PY 994 then KL 639 at Schiphol
Zandery → Amsterdam → San Diego
Timetable, Amsterdam time
12:00PY 994 from Zandery at the gate
09:55KL 639 to San Diego leaves the gate
21 h 55 apart on the timetable, overnight
KL 639 leaves 21 h 55 after PY 994 arrives on the timetable: more than half a day, so not a connection we count.