UA 543 then NZ 2159 at San Francisco
Chicago O'Hare → San Francisco → New Orleans
Timetable, San Francisco time
13:30UA 543 from Chicago O'Hare at the gatealso AC 4163, VA 8089, NZ 9321
08:15NZ 2159 to New Orleans leaves the gatealso VA 8476
18 h 45 apart on the timetable, overnight
NZ 2159 leaves 18 h 45 after UA 543 arrives on the timetable: more than half a day, so not a connection we count.