As a Strategic Advisor, there’s two ways to handle first calls:
Option 1. Talk about how you could help, in theory, if they formalize the relationship with you. In this case you’re leaning on scarcity and mystery.
Option 2. Help as much as you possibly can, for free. In this case you’re hoping they understand the immediate value and recognize that the devil is in the implementation details.
I prefer option 2.
Add value. The rest takes care of itself.