i have an interior scene replicated from photo reference as a way to practise blender.
this scene has sun, artificial area lights to help lighting the interior. and a HDR image to get something as a background and not to light the scene.
i don't know how these work up in Blender and Cycles.
as in SketchUp with other render engines, the background would still show up and visible to the camera. even with rectangular lights added behind the window's glasses to help the interior lighting from the exterior.
for now i've come to conclusion that the problem is the glass shader i used. adopted from blenderguru tutorial on kitchen modelling. checked out the Material-Preview and got almost diffused shader. then, i look for different approach for the glass.
i've come to these pages/queries;
which suggested "tricky glass" nodes setup material and got strange look at the window in the corner.