When you try to make sense of these pictures, the questions with these components are:
a. are they in the place they landed on impact ?
b. or were they lifted or dragged to the side after impact to either get them out of the fire, or get better access to put out the fire, or lifted to search for and recover the victims ?
when a., this could suggest an inflight fire,
when b., this would require checking for dragging marks on the ground, and if not, for a vehicle with a crane with sufficient capacity,
I have not checked the ground or debris for dragging marks (again a better top down view picture would help). But have seen the white vehicle/truck with the 0.5-2.0 ton crane at the back. So lifting and being laid to the side is a clear option.
My impression is - low probability that both the L2 and R2 panels broke away from the fuselage at almost exactly the same time and altitude, and at low altitude (because they are so close together) ... So the burn marks could well have come from being exposed to the fire that destroyed the forward fuselage. And the panels then moved to the side, away from the center of the fuselage.
By the way, this is an example of the fact that investigators have better access to this class of input information.