Offline downloading does not mean disconnected downloading, I don’t know how to translate it, I try to explain it from the user’s point of view. We know that some websites limit the download speed from the server, so we have to keep the browser or computer running at all times. Or torrent files or even ed2k, their speed depends on the upload network speed of the current file user, I think if Nextcloud supports the user’s self-built network disk service to download these files (slow single-thread http/torrent/ed2k) then it can be unattended, in fact, many commercial network disks have this function, such as Baidu network disk, Xunlei network disk etc.
Hope to join the feature as soon as possible, thank you!