I have a question for you Pilots.
This was a single channel approach. To me this means that they were briefed to do a manual landing. If they were going to do an autoland, then the second AP would have been engaged by the time of the RA subtle failure.
So what happened to the manual landing? I see no evidence that the AP/AT was ever disconnected.
If you were flying an auto approach to a manual landing, when is the latest that you take over? With this low cloudbase, would you wait until you can see the runway, or would that be too late. Would an autoland have been better?