Makes me wonder.
Just read your thread, I can't believe the lack of understanding of this crew in icing conditions.
The fact that you as a crew were "looking out" for these cowboys, in itself should be highly praised. Good CRM as far as I am concerned, so if I had been the Iberia crew, this information would have been welcomed!
A brief story, if you don't mind!
A few years back in ANC I had asked for de-icing (heavy jet).
Well what do you know; A few minutes later we receive a call from the ground person informing the crew we had completed de-icing.
I turned around and asked the other two crew members if they had heard the start time for the second application of fluid (we used 2 step de-icing then).
None of us could reason as to why we had not been told this. I called the de-icing supervisor and asked what was going on. He did not know the procedures as he was new to the job, so I requested an engineer to start the whole process again.
The impression I got was "it was good enough", but I countered this by saying, "proper procedure or we don't go", period.
I never rush briefings etc or go outside any "hold over" times in these weather conditions, I go when we are ready!