That is not correct, the Neff downdraft extractor differs significantly from the Bosch...
I believe what RobsonMKK meant: "BSH markets, in addition to the main brands Bosch, Siemens, Gaggenau, and Neff, also the brands Junker and Viva. Likewise, BSH markets the brands Thermador, Balay, Coldex, Constructa, Pitsos, Profilo, Ufesa, and Zelmer in various countries." Source: Wikipedia Maybe there are some models where this does not apply, but in many models, only design details really differ, for example, in some dishwashers the basket is red in NEFF, blue in Siemens, the rest is identical. Whether you can find StudioLine equivalents at NEFF, I do not know, for example. To my knowledge, the Slide&Hide oven is currently only available at NEFF. Large areas of the product range do have significant overlaps, and I think that is what RobsonMKK was referring to.