Cords are made of astral and etheric energy and connect two people’s subtle bodies. They stretch between two people very much like an umbilical cord and transfer emotional energy and chi between the two. It does not matter how far away the other person is, as the cord is not a physical substance and distance is irrelevant, so it is still effective from the other side of the planet.
All babies have a cord going from their belly to their mother after the physical umbilical cord is cut.