That's an interesting question. I rather hope you're right.

Would very much like some insight into what took him there.

You've seen the report, I think? When I arrived in the clearing, father wasn't alone. Whether by design or by chance, he was there with Karkaroff. They were already parting, and I allowed K to go. My business was strictly with father. But I would like very much to know what business he could have had with K. If any.

Two more names came up in what followed: Snape and Dumbledore. Not that he said anything coherent about them.