Which Timeshift snapshot mode takes precedence when both rsync and BTRFS targets are configured on the same system?

This question addresses how Linux Mint's Timeshift utility resolves snapshot mode selection when both rsync and BTRFS storage targets are configured for the same system. Timeshift documents support for rsync-based snapshots across broad hardware compatibility and BTRFS-native snapshots for incremental updates, but the interaction between concurrent targets during scheduled creation or restoration is not explicitly defined.

Key constraints include the partition layout governing snapshot storage, the default fallback behavior when one target becomes unavailable, and how version-specific package metadata in rsync snapshots compares with BTRFS native snapshot metadata. Uncertainty arises from the lack of documented precedence rules, particularly across Mint point-releases or desktop environment variants.

Can automatic snapshot creation prioritize one target type over the other? Does restoration from a BTRFS-native snapshot behave differently on an rsync-configured system? Is manual intervention required when switching snapshot modes between Mint releases?