When making a sci-fi door, do you…

[vernal shell]

Import each piece of the door - frame, left door, right door as GLTF and assemble into a scene element area 3D with animated movement. OR do you import the whole door and rip out the parts using the editable children, copy/paste and reconstruct it as a scene element like above.

[rough swallow]

I make the door and whole animation inside blender using armature. Then just use bone attachment to add collider