Cross-platform voice chat?

Hi! Do I understand it right, that if I want to develop a cross-platform -- say Google Play Store for mobile + Oculus Quest -- voice chat app, I would need to be able to use a third-party chat solution (like Photon) instead of the Oculus SDK native functionality (rooms, matchmaking etc.) so that it would still work on Google Play/ phone usage, being outside the Oculus store as well? Thanks!