If anyone is interested in an option for real-time chat about Nextcloud Maps, feel free to join the public Matrix room I created for the purpose ( #nextcloud-maps:matrix.org )
People do not have to be members of the matrix.org homeserver to join the room, but they do need an account on a Matrix-compatible homeserver.
By the way, here’s a logo I quickly made for the room avatar if anyone else finds it useful:
