This, from the project I use to deploy my server, could be a starting point

https://github.com/spantaleev/matrix-docker-ansible-deploy?tab=readme-ov-file#bridges

Thanks, that’s what I had found. I will set up prosody somewhere and try…

Do you run any bridge (I forget the XMPP nomenclature). One of the reasons I run matrix (synapse) myself is to have a single interface for many instant-message platforms. I’ve been looking into migrating to XMPP (im sure my matrix deployment can be slimmed down but for now it’s a behemoth taking 4 GB of RAM…) but I’ve been somewhat discouraged by the process