5Z 511 then 4Z 915 at Johannesburg
Kimberley → Johannesburg → East London
Timetable, Johannesburg time
16:555Z 511 from Kimberley at the gate
10:304Z 915 to East London leaves the gate
17 h 35 apart on the timetable, overnight
4Z 915 leaves 17 h 35 after 5Z 511 arrives on the timetable: more than half a day, so not a connection we count.