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A 1 s misalignment costs 0.16 dB against their 0.66 dB pass band, so the alignment-free claim holds. Two caveats measured: at 10 s it reaches 1.00 dB, since a fixed window covers different material once the shift is large; and the separation floor is material-dependent -- two unrelated music banks give 5.28 dB where an unrelated movie gave them 19-20, so the threshold's margin depends on the known-negative chosen. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v