I bought this as a dlc download Main-Spessart Bahn and then a week later I bought TSW2020 and I see this comes with the game, is it identical or is there anything different
It’s the same and it’s a shame you bought it for TSW2 first, as you would have received it for TSW2 for free when you bought TSW2020, along with other routes included in it. This is called Preserved Collection for TSW2. For future reference, if you buy DLC for TSW2020 you will get it for TSW2 as well, but if you buy it for TSW2 you don’t get it for TSW2020. If a DLC is available for both, buy it for TSW2020.