Time Machine doesn’t have a client-server architecture, so it has long had issues with network-based backups that are interrupted. It’s one of the reasons I was never a fan of the Time Capsule.
Dave Hamilton of MacObserver once pointed out at MacTech that you could point Time Machine at a NAS using the btrfs (I think) filesystem, which supports snapshots. The advantage of doing that was that if your backup was interrupted and corrupted, you could roll back to a previous snapshot before the corruption, and Time Machine would just pick up from where the previous snapshot left off. I’ve never tried this, but it seems clever.