We're booked on BA:
here is what I got - this is quite a deal - I booked us in premium economy using miles to upgrade to Club.
Chicago - JNB roundtrip , all in Club/Business for $2976 plus 45K miles pp. And, we were able to get assigned seats since we're AA platinums.
I'm so glad that John pointed out the wider BA window - I'm sure those Business seats would have been gone if we waited until the AA window opens up.