When a friend gets up in the middle of a meditation and turns on the washing machine, you can watch what happens inside your mind. Your friend in that moment is a Zen Master. When writing, and your lover calls through the window, telling that it is raining so softly, the lover is included in your meditation.
But If you are concentrating, you can be disturbed. In meditation, you will experience disturbance just as if looking from a far away hilltop.