Scoring - Are we missing something, or do we need to report a bug?

[Cappster_]

Below is a screengrab of our first game of Metromania

We are having a very difficult time understanding the final scoring, as it seems to be way off from what we thought it should be based on our understanding of the rules.

For instance - A-A: Green shouldn't have gotten 6 points, only 3, because Green didn't lay either of the A destination tiles. In addition, It doesn't look like Green should have gotten any points, because it doesn't seem like Green track was used at all. ( I guess maybe that one spur that goes from A to E?)

B-B: I don't see any way that Orange was involved with the B-B connection, and somehow got 6 points?

I could go on, there appears to be issues with every one of the routes.

Do we not have a full grasp on the scoring mechanisms? or are these bugs that should be reported?

Thanks^^

[Cappster_]

This has been solved - as first time players, we missed the rules about Impossible Trips.

"The guilty party or parties get no points, and all other players get 6 points."