PD 6428 then VA 8393 at San Francisco
Chicago O'Hare → San Francisco → Miami
Timetable, San Francisco time
16:19PD 6428 from Chicago O'Hare at the gate
08:15VA 8393 to Miami leaves the gate
15 h 56 apart on the timetable, overnight
VA 8393 leaves 15 h 56 after PD 6428 arrives on the timetable: more than half a day, so not a connection we count.