Since TAR is in Moscow.......I just want to repost one of Neobie's observations about TAR/WRP travel to Russia.
TAR/WRP always flies out of Russia from the same city they fly into Russia.
So I would completely discount any train trips involving leaving Russia. I have no doubt that they will fly out of Moscow. I would also bet that they fly out of SVO, if that is how they got to Moscow from Istanbul. I plan to try to do more research, but to me, not only the same city, but always the same airport. With St Petersburg, there is no problem because there is only one airport. But Moscow is different....it has two major international airports. SVO and DME. But in all the TAR episodes there, that I have been following the spoilers........I can never remember at any time, teams arriving at DME...........only SVO. It will be a fun exercise to try to pull up the old info and see if any resolution of this hypothesis can be determined.
One good example of this hypothesis is TAR14. Teams flew to the Asian part of Russia, east of the Urals, for two legs. The legs were in Krasnoyarsk and Novosibirsk. They took the TransSiberian Train from Krasnoyarsk to Novosibirst. For those that remember, Novosibirsk is where Phil ran down the street in his skivvies. They then went to India. There was a very easy flight from Novosibirsk to Delhi.......but instead they all few back all the way to Moscow and left the country through SVO.
In our discussions, Neobie and I came to the conclusion that there must be some kind of restriction on TAR to fly out the same way they came in. This might be due to the commerical nature of their time in Russia.....maybe a desire to view filmed coverage........or just restriction on making sure they take all the same equipment out of Russia that they took in. It is really hard to know exactly......but they always follow the same pattern when going to Russia.