If your asking if there is a global way to traverse every call that each OTK policy goes to another there isnt really. If you are looking for a good way to debug it (I am assuming thats why you ask). The best way would likely be as on the below link from Saschas blog,
Tip of the week: debugging policy
If the ultimate goal is something other then for debug purposes possibly you can elaborate on what you are trying to accomplish.
Thanks..