(1) This rule applies if:
(a) a lawyer starts a case for a client that could reasonably have been started at the same time, and in the same court, as another case between the same parties; and
(b) the case was not started at that time in that court.
(2) The lawyer may charge for work done for all the cases only the amount the lawyer could have charged if the lawyer had started all the cases at the same time in the same court.