How can I connect .mtl to .obj?

Hi there,
How can I connect texture file .mtl to the object .obj?
I tried to connect it with PBRMaterial (and then FileTextureNormalMap) but it doesn’t work, I see the object in black and white.

mtl. is a material definition, but it doesn’t contain PBR information, only basic material parameters like color, roughness, or where to find a texture. have a look at my answer here:

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