I take a lot of these calls.
Some of them turn into clients. Some turn into referral partnerships that have quietly sent $4M+ in closed deals back and forth through my network. Some turn into a podcast booking, a newsletter feature, a job board post, an introduction to the exact person the other one of us needed. And some of them are just two people realizing they are building adjacent things and should stay in touch.
All of them are worth 30 minutes.