JU 8510 then UA 1646 at San Francisco
New York JFK → San Francisco → Baltimore
Timetable, San Francisco time
23:54JU 8510 from New York JFK at the gate
22:35UA 1646 to Baltimore leaves the gatealso VA 8138, NZ 9032
22 h 41 apart on the timetable, overnight
UA 1646 leaves 22 h 41 after JU 8510 arrives on the timetable: more than half a day, so not a connection we count.