According to 'Intercession of Saints' adherents, is two-way communication between the dead and the living possible?

Simple question: according to adherents of the doctrine of [Intercession of Saints](https://en.wikipedia.org/wiki/Intercession_of_saints) , just like the living can communicate with the dead, is it also possible for the dead to communicate with the living? In other words, is two-way communication between the living and the dead possible? If the answer is yes, could this reality be put to the test to confirm the veracity of the doctrine? For example, let's say a Protestant is reconsidering his beliefs and is no longer so sure whether the doctrine is true or not. He finally makes up his mind and resolves to pray to Mary, and to his surprise, Mary replies, leading to a whole conversation between the Protestant and Mary, confirming beyond any reasonable doubt to him that the doctrine is true. Would adherents of the doctrine of Intercession of Saints approve of such a test?