Some route cards have two routes:
- The route that's displayed as a line on the card, which will net you the points in the top
- A route in a small blue area in the bottom of the card.
In the rules, we could only find the "if you play with two players, forget the route in the bottom of the card", but it never explains WHAT the 2nd route actually does?
Read that section of the rules again; it says to ignore the second route if you are not using the neutral player. The section of the rules describing using a neutral player goes into how that second route is used.