Ramana Maharshi :physical disturbances during Nirvikalpa Samadhi

Question - Can the meditator be affected by physical disturbances during nirvikalpa samadhi? My friend and I disagree on this point.
Ramana Maharshi : Both of you are right. One of you is referring to kevala and the other to sahaja samadhi. In both cases the mind is immersed in the bliss of the Self. In the former, physical movements may cause disturbance to the meditator, because the mind has not completely died out. It is still alive and can, as after deep sleep, at any moment be active again.

It is compared to a bucket, which, although completely submerged under water, can be pulled out by a rope which is still attached to it. In sahaja, the mind has sunk completely into the Self, like the bucket which has got drowned in the depths of the well along with its rope. In sahaja there is nothing left to be disturbed or pulled back to the world. One's activities then resemble that of the child who sucks its mother's milk in sleep, and is hardly aware of the feeding.