Interview questions again

Sometimes people agree to give me half an hour of their time, for which I'm grateful, but it's not long. So I need to be efficient in eliciting information that tells me how they engage with people on an IT project, and how that relationship brings value. From a prompt sheet of 20 questions my minimum questions must cover:

1. What's your expertise?
2. What is/were the relationships like?
3. What has helped or hindered relationships?
4. What did you learn?
5. How is that (engaged) relationship valuable?
6. Where do the most value adding interactions happen?

My senior PG at the next desk tells me you get more skilled with practice. Good - give me practice!