Ahhh, yes, I see what you mean. I think you are probably right about this.I don't think that's a fallen piece. I believe that is the curved white cladding we were just discussing. There is going to be a white swoosh going across both buildings wherever white meets 'brown' (for the lack of a better color name, certainly it's closer to brown than it is to orange). Just look up the renderings in the project site.