AV 2191 then VA 8393 at San Francisco
Sydney → San Francisco → Baltimore
Timetable, San Francisco time
06:25AV 2191 from Sydney at the gate
21:30VA 8393 to Baltimore leaves the gate
15 h 05 apart on the timetable
VA 8393 leaves 15 h 05 after AV 2191 arrives on the timetable: more than half a day, so not a connection we count.