All this discussion about the van, whether it was in park, the engine running etc is all very interesting but for me the important bit was that despite being ordered to go around twice the plane didn't!
Yes there were various factors why the crew didn't but this aspect seems to have been ignored!
The automatic announcements drowned out the first one, the crew didn't see anything (sorry that don't wash, when it's dark and you're concentrating on touchdown point, chances of seeing anything else is small) the crew discussed the second call and decided it wasn't for them - what about "if in doubt ask"
Where are the recommendations regarding all of this?
Next time you send someone round will you really expect them to pull up now?