We landed at T5B yesterday from JNB then a connection to Man at A. A few months ago we tried to go through security to be told we couldn’t. We didn’t even bother this tome and just went through A. It took around hour and half in total from leaving the plane to get into T5B lounge.
The positive was that we saw a member of cabin crew that served us a few months before and recognised us and had a good chat with me as we boarded the transit. He said straight away “why didn’t you go through T5B connections”.