Hi, I'm looking to book LHR to MQP through Jo'berg with BA WT+. The JNB/MQP leg is with SA Airlink, it works out about £1000 cheaper (3 of us) if I book LHR/JNB with BA direct and JNB/MQP with SA Airways direct. If I book separate tickets will I need to pick up my luggage both ways at JNB and recheck in at the desk or can I check it straight through? ( I know I will pick it up at JNB and walk it though customs). We only have 90mins layover at JNB both ways and so want to understand exactly what we need to do!