Not at all. I am not talking about RPC calls that need a specific port to be open or something.
I am talking about direct commandline communication between Frontend and darkcoind.
Frontend.exe and darkcoind.exe would best be in the same folder.
It's like when you type commandline commands by hand, but now the frontend.exe makes this for you (with the darkcoind running in the background invisible)
You still need to generate an RPC user/pwd and stick it in the conf file for that to work. At least I had to.