If, apart from this section, this Division (except this Subdivision) would have a single application to the * head company or single company, or to the establishment entity, in relation to a period (the test period ) that:
(a) is all or part of an income year of that entity; and
(b) overlaps the grouping period;
this Division (except this section) is to have separate applications to that entity as follows:
(c) a single application in relation to the period of overlap; and
(d) a single application in relation to the part (if any) of the test period that is before the period of overlap; and
(e) a single application in relation to the part (if any) of the test period that is after the period of overlap.