@artifact , I’m getting a little concerned.

Any chance you can post a WIP to the WIP folder on Google Drive. So @spikeyxxx and @theluthier can see the direction your heading in regards to the shape connection to the window frame.
If you haven’t set up Google Drive for the Dog Pound have a look at this
https://blog.cgcookie.com/forums/topic/cutting-brush-setup-for-blender-3-1/