CZ 1646 then EK 6372 at San Francisco
Charlotte → San Francisco → Ontario
Timetable, San Francisco time
16:51CZ 1646 from Charlotte at the gatealso AA 2569
16:35EK 6372 to Ontario leaves the gate
23 h 44 apart on the timetable, overnight
EK 6372 leaves 23 h 44 after CZ 1646 arrives on the timetable: more than half a day, so not a connection we count.