(1) Service of a document after the commencement time—
(a) on Westpac is deemed to be service on Challenge in addition to service on Westpac; and
(b) on Challenge is deemed to be service on Westpac in addition to service on Challenge.
(2) Subsection (1) ceases to apply upon Challenge ceasing to be a related body corporate of Westpac within the meaning of section 9 of the Corporations Law. [3]