...there was a cut exactly where I was supposed to watch ... and that Krivit did not film the whole process, so information is lacking ...
Oh yeah - evil Krivit cut from the video the part where Rossi explained that the black hose is filled with prototypes of the same ‘steam eating’ platinium sponges, which he later during the Doral test cooked to perfection.
This little heat suckers are the reason why we can only see a little steam puff exiting the hose, and not what one would expect from 7 kg/h steam.
All explained now - case closed.