(1) The pleadings in a proceeding close—
(a) if a pleading is served after the defence, or answer to a counterclaim—on service of the pleading; or
(b) in any other case—7 days after the day the defence, or answer to a counterclaim, is served.
(2) If a third-party notice, or subsequent notice, is served in a proceeding, the pleadings in the proceeding on that notice close—
(a) if a pleading is served after the defence, or answer to a counterclaim, to the notice—on service of the pleading; or
(b) in any other case—7 days after the day the defence, or answer to a counterclaim, to the notice is served.