I agree with CD that there may have been elements here that were either lost, or at least de-emphasised, in the editing.
(Spoiler alert)
The position of the clashes is non-arbitrary, but the puzzle can be solved as if they were. Using the part (a) of the preamble instructions along with the disambiguation of (b) gives the cinematic hunter; highlighting the quarry fulfils the requirements.
However, the unused letters give the path of a previous achiever, moving left to right, starting with a different top row lettered cell.
The 1930’s hunter follows the same path as his predecessor in reverse (with a couple of side-steps). I guess the difficulty in clashing the high-Scrabble scoring letter led to the device of the two four-barred cells.
It’s had way too much work put into it to be a Nina of course, and it may be missed on first run through (by me, for one).
Many thanks indeed Elgin.