QF 3657 then CM 1456 at San Francisco
New York JFK → San Francisco → Ontario
Timetable, San Francisco time
23:59QF 3657 from New York JFK at the gate
21:20CM 1456 to Ontario leaves the gatealso AC 4122
21 h 21 apart on the timetable, overnight
CM 1456 leaves 21 h 21 after QF 3657 arrives on the timetable: more than half a day, so not a connection we count.