[first call, during normal work hours, no prior coordination or notification] Is now a good time to talk? This is a very exciting opportunity, are you sure you're not free to talk now? How soon can you be available to talk? Okay, I can email you, but how soon can I call you back? [After not emailing me, and calling me back approximately when he said he would] What's your current job? What's a typical day like for you in your current job? Okay, we're looking for someone with skills like yours but for a high-risk, low-reward, high-tedium role. Are you sure this job isn't a fit? Why aren't you interested in this job? Do you know anyone who would be interested in this job? Are you sure you can't refer anyone to this job?
