Personal, genuine "getting to know you" discussion, riddled with thoughtful questions, and a genuine interest in finding a role that could be a good fit, regardless of available positions.
Interview questions [1]
Question 1
DEEPLY PARAPHRASING BECAUSE THIS WAS YEARS AGO:
After an entertaining discussion about the projects, the company, and where they would like to fit me in:
"So, what do you think it would take, aside from all of the stuff we've been talking about, to make this work for *you*?"