The one on those are two panes. Interestingly Giulia has a roof piece in the middle of two panes while Stelvio didnt have that piece (which I really liked). Your rear passengers has glass too on Giulia I guess it is similar to the Giulias without the rear pane.I think that is similar to the Giulia/Stelvio. I have never opened my Giulia's moonroof. I just appreciate having glass to let in light.