But it is out job to suggest courses of action. And based on how Borek didn't seem angry when he mentioned waystones and knowing they flowed to Karaz-a-karak we have good reason to suspect that we only have part of the picture - and that the high king may be willing to spill more if confronted in the proper manner with a need for answers.
Sure, suggest courses of action, a thing you do by talking to people. Silence on something you know they would want to know is not a suggestion, it is deception.