There is a modified hose for some washer dryers but would need to have the full ENR number before i could confirm whether your’s is one of them. Its the small ‘U’ bend hose connecting the little condensor box to the big condensor container. The hose has been re-shaped to stop excessive drawer condensation/steam.
And with the dryer duct , did you remove it to clean it or did you just access it from the top by removing the fan ? The normal build up is right at the bottom where the condensor duct joins the tub and normally only be completely removing the duct can you clean it fully .