Moonlighter

The protection blocks at the end:
PILOT 6912x[P 2168]
SYNC standard P 667, P 735
PAUSE approx 2900ms
PILOT 6912x[P 2168]
SYNC standard P 667, P 735

The loader waits 3100ms after the first SYNC, then counts n pilot pulses before the second sync, 6000<n≤6500.