If:
(a) 2 persons who are not members of the same couple are each qualified for carer allowance for the same care receiver or care receivers; and
(b) the Secretary has not made a declaration under subsection 981(1) in respect of carer allowance for the care receiver or care receivers; and
(c) one of the persons is receiving carer allowance for the care receiver or care receivers;
carer allowance is not payable to the other person for the care receiver or care receivers.