If not Denmark, who takes the lead?
It would seem that the engine manufacturer has the most to learn/lose, therefore the aircraft manufacturer (or would it be the owner?).
Who stands to benefit most?
The public, who depend on an impartial investigation by expertise appropriate to the challenge.
I'm confused on this thread about what nation administers the the location (Danes or Canada) nut I'm sure that the governments know and have already sorrted out what investigative agency should take the lead, considering available resources and interests. No sense in the rest of us guessing