If a protected person or conserved person has both a plenary guardian or limited guardian and a conservator of the estate or person or a temporary conservator who are not the same person and a conflict arises between the two concerning the duties and responsibilities or authority of either, the matter shall be submitted to the Probate Court making the appointment of such guardian or conservator and such court shall, after a hearing, order the course of action which in its discretion is in the best interest of the protected person or conserved person.