Skyjob, it’s difficult to understand the logic of a visual constraint affecting brake use.
In the very low visibility conditions suggested, then the automatic landing system should have a high integrity rollout control or guidance element, thus the pilot should not be in visual loop as you suggest.
Does the T7 have rudder fine steering? If so, then steering would be independent of brake pressure.
Manually braked landing distances do not normally consider crosswind effects - ops on contaminated runways might.
Are there any system differences involving brake application between manual and auto landing?
Any differences in the deployment of spoilers, WoW, or reverse thrust, auto/manual land?
Presumably the landing data is based on the Boeing ‘actual distance’, but is the basis of calculation the old style ‘actual’ actual or the more recent Operational Landing Distances (with/without Factors).
With fast fading memory and from a very longtime ago, didn’t autoland distances always have to assume a wet runway, and that Cat3B ops had to use autobrake.?