Has anyone played Cities in Motion? A task like "Build a line connecting train station, hotel and office building" is quite common. I wonder if this is a reference :)
"Train station, hotel and an office", not accepted. Did not like "an". Reported.
I think that you need to either use article with all the words or don't use it all. It's hard to think of all the possible combinations
I think right now it's accepted in either combinations because... whatever, you got the meaning, articles don't matter :D (I guess, I just see it's accepted, there are no notes why)