Just as a matter of curiosity why would two big holes be burned in the top of the fuselage ? Seems that’s where carry-on luggage would be secured in the overheads.
Dunno.
The fire started after the crash, and apparently after everyone was out of the plane. The right engine is sitting next to the fuselage, and probably triggered the fire.
The 777 has a center fuel tank (at least the extended range versions). If it wasn't empty, it would have fueled the fire.
Notice that the less damaged areas are around the doors where there is more structural material.
I was noticing the same thing - maybe there was something that didn’t happen when it was supposed to happen. The whole story is strange.