In which two arrival situations does current PANS-ATM say the ATC unit need not apply the prescribed time-based wake-turbulence separation, while still issuing a caution when appropriate?

1. A VFR flight landing on the same runway behind a Super, Heavy, or Medium aircraft; or an IFR visual-approach arrival that reports the preceding aircraft in sight and is instructed to follow and maintain its own separation.
2. Every Light departure behind a Heavy arrival, regardless of relative runway positions.
3. Every IFR instrument approach whenever the pilot can see the runway.
4. All operations whenever surface wind exceeds 5 kt.