Board Thread:Questions and Answers/@comment-27168366-20160109214941/@comment-34471787-20160404042419

Well when Tails was knocked unconscious from the plane crash in Sonic Adventure, he had a dream of him walking in a forest (I haven't played the game in ages so I probably might have gotten some things wrong I apologize if so) and the Sonic zoomed past, so I am guessing that Tails met Sonic in a forest somewhere.

However in Sonic the Hedgehog 2, its explained that Tails met Sonic on West Island when he wanted to show Sonic his plane called the Tornado. So its hard to decide which one is true.

But in my opinion, the classic Sonic and the modern Sonic are set in different universes. So in the modern era, Tails met Sonic in a thick forest, but in the classic era, Tails met Sonic on West Island. :-)