When is your date of journey? The CC of 22120 here in IndiaRailInfo shows both Vistadome coaches adjacent to each other which is not true. I also have the same query and filed RTI as well but didn't get any response yet. Some of the YouTube videos are very contradictory in terms of coach position. If you are planning to travel very soon then please let us know here what was the Coach position after your journey is over.