Because the videos are private and the course does not offer a way to download them for offline use, I dont think you can download them. Even if you had access to the video’s url, you would still not be able to download it due to permission restrictions.
What you can do however, is watch the video in 1x or 1.5x speed, while recording it when a screen recorder.
It is not as fast as a download, but at least you get watch it offline.
