AV 2347 then IB 4503 at San Francisco
Burbank → San Francisco → Miami
Timetable, San Francisco time
20:08AV 2347 from Burbank at the gate
12:04IB 4503 to Miami leaves the gatealso GF 6454
15 h 56 apart on the timetable, overnight
IB 4503 leaves 15 h 56 after AV 2347 arrives on the timetable: more than half a day, so not a connection we count.