I have an Eos 2.00 TDI auto with DSG gearbox, sometimes, when slowing, down/decelerating, especially to about 30-40mph, or slower seems to throttle back, almost like a flat spot. The dealer says that their plug in computer shows no fault, and there are no instrument warning lights appearing. does anyone else have thoughts on this?

Is it kind of like if you had a clutch pushed in and it seems to coast a bit???
Trying to understand the condition your discribing.