At the workshop, synergy was defined as two or more working together to make an effect that either one alone is incapable. Collaboration in development can amplify good results across sectors many times over, and create results that would be impossible without a synergistic relationship.
Open communication is the key.
Start simple, and start small with any project. Determine each party's roles and responsibilities. Compromise, but remain true to your values. Take and share risks. Expect the unexpected, and be prepared to adapt to new variables.