More Strides than Rides said:
Am I the only one not seeing anything out of the ordinary in the riders using cars to make their way back?
Maybe I wasn't paying attention but it looked pretty status quo from both Sunweb and Astana
I always thought there was a clear distinction between drafting through the cars on your way back to the peloton (commissaires turn blind eye) and following your own team car for a significant period of time, which is detached from the rest of the train (blatant cheating).
Dumoulin did the latter, and probably saved 10-20 seconds as a result.