I'm not sure how this would even happen as I haven't been able to find information on an Austrian secret service, so they may not have even had one. But does anything change in World War One if Austria has solid proof of Russian and Serbian government involvement in the assassination of Franz Ferdinand?
Maybe German high command is worried it's already too late to go to war with both Russia and France. And they convince the Austrians that they need evidence before a DOW to isolate Russia diplomatically. And whatever spies Austria has gets witnesses and a paper trail smuggled back to Vienna.
What can be gained going to Serbia privately? Russia? What happens if Austria makes it public? And will the course of the actual war change if Franz Joseph just dumps it in the papers, screams "Damn you all!", and throws everything he's got at Russia and Serba (this last is, of course, a humorous simplification of what happened in the OTL).
Maybe German high command is worried it's already too late to go to war with both Russia and France. And they convince the Austrians that they need evidence before a DOW to isolate Russia diplomatically. And whatever spies Austria has gets witnesses and a paper trail smuggled back to Vienna.
What can be gained going to Serbia privately? Russia? What happens if Austria makes it public? And will the course of the actual war change if Franz Joseph just dumps it in the papers, screams "Damn you all!", and throws everything he's got at Russia and Serba (this last is, of course, a humorous simplification of what happened in the OTL).