Is there a TL;DR for the video ? The way I understood it was that in case of no steering input and somewhat constant load, the ECU would "assume" the engine is

Is there a TL;DR for the video ? The way I understood it was that in case of no steering input and somewhat constant load, the ECU would "assume" the engine is being tested (on a rolling road) and then would start burning rich which would reduce combustion temperature and reduce NoX. What is the role of manipulating SCR here ? Was the ECU increasing AdBlue injection during testing ? OR does it suppress AdBlue during normal cycles ? (That would be horrible)