High hopes, low expectations

If you meet with the Human Resources person at a company for an informational interview and he says he likes your enthusiasm and says that he can see you are interested and shows you around the facilities and introduces you to everyone on the team and tells you that he could use someone with your abilities at least temporarily and tells you to call the Head of Engineering in a week to continue the discussion of your possible employment with the company and makes you say to yourself as you leave "Wow, I just wanted to learn more about his job, and now I might end up working there!", it *does not* mean that anybody at the company will return your calls.