can I just ask this one again:
I'm rather sure that the PF would be required to have his hands on the throttle levers. I've always advocated the moving levers over the stationaries for the exact reason that they give you immediate tactile feedback of what the A/T is doing.
You think they would be flying an approach with their hands.. where exactly?
Not discussing the single radalt failure leading to mode confusion between the A/T and the A/P here, just the basic question: why has the human interface failed?