Sync folders to 2 separate servers


I am using the nextcloud client to sync data to one server.

I noticed i could also use the same client to sync data to a service provider that does not have a Nextcloud but has a webdav file storage operation.

What i would like is to sync my data simultaneously to the 2 servers.

Basically it is a functionality that seems to have been implemented by owncloud here:

Would it mean a lot of work to implement this?

Thanks and have a nice day,