I am not familiar with Symphony at all and have not heard of it being used to distribute Tableau extracts. I am curious if you have explored the use of Tableau Online | SaaS Analytics For Everyone or Tableau Server | Access Insight Anywhere for sharing disseminating data?
I would also be happy to assist trying to use Symphony as well. Can you share a link to their product specs page.
Apologies for delayed response Patrick, more info on Symphony below - it is essentially a robust communication tool that can easily link with APIs, Aps, Bots or integrate with other systems to facilitate 1:1 or group chat and streamline workflows