QR 2183 then UA 1646 at San Francisco
Los Angeles → San Francisco → Baltimore
Timetable, San Francisco time
23:27QR 2183 from Los Angeles at the gatealso BA 6449
21:30UA 1646 to Baltimore leaves the gatealso NZ 9032
22 h 03 apart on the timetable, overnight
UA 1646 leaves 22 h 03 after QR 2183 arrives on the timetable: more than half a day, so not a connection we count.