AA 1826 then UA 1646 at San Francisco
Philadelphia → San Francisco → Baltimore
Timetable, San Francisco time
21:57AA 1826 from Philadelphia at the gatealso BA 5440, EI 7170
21:30UA 1646 to Baltimore leaves the gatealso NZ 9032
23 h 33 apart on the timetable, overnight
UA 1646 leaves 23 h 33 after AA 1826 arrives on the timetable: more than half a day, so not a connection we count.