How is .nwd/.lfa file being rendered in Cognite Reveal. Is CDF already converting nwd/.lfa files lossless?

How are .nwd and .lfa files rendered in Cognite Reveal? Does CDF already convert .nwd and .lfa files in a lossless way, without losing any node or asset metadata? Is is converted to .glb/.gltf file types as conversion output?

What happens if we use raw Three.js instead? How can we work with .nwd files in that case? Three.js doesn’t support .nwd files directly, right?

Is it necessary to convert them to .fbx or .obj formats? Wouldn’t that result in a lossy conversion, potentially causing loss of metadata, asset hierarchy, or textures? 

How do we use .nwd and .lfa files for show warnings or overlays?