Many important decisions are made over quiet chats, informally, over a meal or a glass of wine.
It has to start somewhere and it will be small steps, but almost anything is possible.
Focus on things we have in common and all agree on rather than any differences.
It is about sharing vulnerabilities and being open and being brave enough to distribute your power to many.
I’d encourage you to look at your own organisation and find opportunities to collaborate. Don’t accept non-collaborative cultures.