Syncopa. Window technique.

www.flickr.com/photos/140316942@N07/50874459518/in/datepo...

As one colleague pointed out, a Tile, Round Corner 2 x 2 Macaroni 27925 can be attached to a

Technic, Axle 3 with Stud 6587 inserted into a Technic, Brick 1 x 1 with Axle Hole 73320.

At the time of construction, I did not know about Technic, Brick 1 x 1 with Axle Hole 73320 (2021 release)

Done