Link obj files into blender? I normally use Octane render, both standalone and plugin version for Sketchup. I'm not at all an hardcore user. I'm trying out Blender in my freetime, just for fun.

When I use the standalone version of Octane, I normally export my sketchup model as obj, and link this file into Octane Render, with it's own node. When I make changes in Sketchup (or Gravity Sketch) I export again as obj and simply press a reload icon in Octane, and the model is updated. 

I can't figure out how to do this in Blender. I have only found out how to import, but not link / refresh geometry. 

Is it not possible or am I'm looking in the wrong part of Blender?
You can't do this with Blender and OBJ files. Using Alembic files referencing geometry is possible.