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Skilled
It's using the same water as the wash cycle.Water isn't added during the soaking. One might say the water is too little for soaking but to solve that, it flips the clothes every few minutes during soaking.
If it agitates the clothes then stopping the power isn't quite the same thing.
But then what is the difference with a longer wash cycle?
It would seem that soak is just extending the wash cycle by an extra half hour