Ah, so the connection points in the red areas don't have to have a track placed next to them. Ok, add that to the list of rules mistakes on our first game. I assumed they were like any other track and had to have connecting tracks placed next to them. I assume Goderich is an exception (ie you have to connect to its tracks if you place a tile next to it? But all the other red connection points do not have to be connected to if you place a tile next to them?)
You never have to connect track. The only requirement that I know of is when upgrding, you must honor existing track.
Look at the pick above, in the center there is a green tile with a link going into a yellow tile without a connection. That is perfectly legal.