So. SGN will be in a week but I did it in HAN this morning. On the far left of the immigration there are two “special” lines; diplomatic and “skyboss” which is for business and status holders I think. That said, I took my boarding card out of my passport on the plane to see if I was asked for it; and I wasn’t. The arrivals hall was very busy but the skyboss line was empty so I was in the baggage hall in about 10 mins after setting foot on the air bridge, land side about 10 mins later. Very pleasantly surprised.