"I recently set up rclone to do nightly backups of my entire OneDrive to Dropbox ..." I hope it is interesting / useful for you to learn that you can maintain

"I recently set up rclone to do nightly backups of my entire OneDrive to Dropbox ..." I hope it is interesting / useful for you to learn that you can maintain a workflow like this without ever installing rclone. rclone is already built into the rsync.net platform so you can use it to orchestrate transfers like the one you describe: ssh user@rsync.net rclone sync s3:bucket dropbox:whatever ... using only ssh.