Planning a trip to VFA: current likely flight option is BA 0057 (which comes into JNB at 09:05 am) on to BA 6285 (leaving JNB at 11:25 am).

The alternative appears to be to arrive a day early and overnight in JNB (there is - currently - no availability on the BA 0055 into JNB on the date we would prefer to travel).

What's the collective wisdom on the connection time at JNB in alternative 1, please? Many thanks.