Is there a way to migrate directly from dropbox to nextcloud?

Nextcloud version: 13
Operating system and version: Debian 9.5
Apache 2.4.25
PHP 7.0.30-0+deb9u1

I need to transfer 207 GB of data from dropbox to nextcloud. Is there a way to do it directly, without having to upload it from my home connection to nextcloud.

Ideally nextcloud should talk directly with my dropbox account and pull all the data.

Can this be done?

There was an app to use Dropbox as external storage. There is only an experimental version:

If you have full access to the system, Dropbox has perhaps a way to connect directly to your system, then you can copy files.