Appreciate the context/clarification.  I'm trying to troubleshoot and wanted to be certain I understood if it was applicable (it's not, thankfully).

I have a similar situation (it's not 60% but still extremely high).  Can you explain your comment about "all links going through doubleclick trackers", please?  Basically, what is the scenario that would cause traffic from an ad server to become "External Referrer" despite the ads having campaign pa...