Quick clarification regarding crossing the finish line

[MNov]

<G10> Each TRACKBALL that has CROSSED its own FINISH LINE while not in contact with a ROBOT of the same ALLIANCE will earn 2 points. A TRACKBALL that has CROSSED its own FINISH LINE which contacts ROBOTS of both ALLIANCES while CROSSING will earn
2 points.

Now, I understand what's written here, but since this is probably one of the most crucial, potentially game breaking rules, I just want to know if I understand completely.
A robot holding the trackball passes through the finish line, the team gets 0 points, correct?
A robot herding the ball bumps into the ball while it's still on the finish line, the team gets no points, correct?
A robot with a very long arm lifts the ball above the overpass, takes it to the other side, and then drops it, does the team get 0, 2, 6 or 8 points?

Thanks.