To go heads down on a runway after an autoland and autopilot failure and be able to track the LLZ, gauging distance to go by DME
Believe it or not you don't have to be an ace to do that. It is similar to running into a bank of thick fog at 120 knots seconds after touch down or even blinding tropical rain where all forward vision is lost in a flash during a take off or landing roll.
Providing you are tuned in to the localiser for that runway for the landing or take off roll, it is relatively straight forward to maintain the centreline. In the simulator it can be practiced by merely turning off the visual display and hey presto problem solved. This is not new. During our military training of years ago we did blind take off under the hood as part of the instrument test. Of course there was a instructor or safety pilot if directional control was a problem, but it was doable and a great confidence builder on the basis that one day you might have to fall back on that type of basic instrument flying skill one foggy night; rare though that may be. Todays full flight simulators are engineering marvels; yet operators tend to stick rigidly to a regulatory requirements only, when it is equally important that pilots have training on real life events such as the above subject of loss of forward visibility during runway operations.