This service, see details in the screenshot below, has a Go via instruction, where it needs a stop at instruction. Immediately after this go via you need to uncouple the wagon. Also, why is this amount of AP rewarded? It does not make sense. It is not timetabled. Finally, you cannot get gold for driving this. I did quite well but only got bronze.
yeah some freight services are very bugged specially with the RHTT for me. it just spawns the two class 66's and not the actual RHT