Ivan doesn't wait too long before speaking to Hal; after he calls Sonja, he thinks it's only fair to give the older vampire at least one warning.

And, after all, if he really is on the wagon, he has nothing to worry about.

He asks genially after Hal, and eventually finds the library. "They have made some improvements, in the 20 centuries following, you know," he says by way of greeting, sitting down opposite.