I’m trying to replicate the effect I’ve seen in interior scenes like Apartament in Paris. I have a problem with creating soft shadows on walls that aren’t directly lit. As seen on pictures below
That honestly doesn’t look like ambient light in that first scene, it looks like just any other bounce lighting. It looks like the light from the window is hitting it directly, making it cast a shadow like normal.
Also just to check, did you enable Ambient Occlusion under the lightmass settings for the map?