Re:Question: direct connection more costly than indirect?
There are two such places on the US map that I know of:
Boise - Cheyenne : $24
Boise - Billings : $12
Billings - Cheyenne : $9
I believe this is the one you're referring to -- save $3!
Cincinnati - Raliegh : $15
Cincinnati - Pittsburgh : $7
Pittsburgh - Raliegh : $7
I haven't looked at the German map to see if any exist.
On BSW, the costs are calculated for you so I assume it finds the cheapest route. I think I'll test this next time I play just to be sure.