AEG Combohob recirculation ducting

[djcdan]

Hi. I am needing to purchase ducting for our AEG combohob to complete a recirculation setup. I know these pieces are purchased from AEG directly.

 

Problem is, I cannot find a piece shown in the manual on AEG's marketplace. I am hoping that someone here has also installed the AEG combohob with recirculation and can point me in the right direction.

 

 

The part I need to find is the item coloured in light grey in image 9a.1. I am aware that the dark grey is the carbon filter but I do not know, and cannot find what the piece is that connects between the hob and carbon filter.

Does anyone have any ideas. AEG themselves were not too helpful...