Ok, for the first time in my life i managed to AAR. Im leaving here the way i did so that maybe it could be of any help to anyone else trying to get the hang of it.
I created a tactical engagement where the tanker goes back and forth on open sea for 360nm on a 360/180 axis (20A/300kn). Placed an AWACS to get vectors and off i went to try and engage the nasty flying gas pump. I dont think i got all the way up to Russia as per FPL, but lucky as i might have been it didnt get long to achieve. Now ill run this home brewed scenario a few times just to get the hang of it and then ill try my luck with the vanilla training mission and see what changes.