Poor Fernehalwes is left to try to explain the (I think) unexplainable.

I thought the into was prophetic. That in deciding upon a leve, he had a vision of what it entailed, and then said "yes, that looks like what I wanted." That is why he looks the same in all parts of the original video (and, in theory, why the party/jobs can be inconsistent).

Admittedly, that doesn't explain the Battle of Silvertear Falls (about which I know nothing) or the ARR visuals.