4Z 798 then SA 337 at Johannesburg
Port Elizabeth → Johannesburg → Cape Town
Timetable, Johannesburg time
14:154Z 798 from Port Elizabeth at the gate
13:00SA 337 to Cape Town leaves the gate
22 h 45 apart on the timetable, overnight
SA 337 leaves 22 h 45 after 4Z 798 arrives on the timetable: more than half a day, so not a connection we count.