Case 1: Get a morph, get morphing powers again, get another morph and be able to keep switching through first level and second level morphs all the time without needing to morph through the original body to remorph.
+...< [ { original body } first level morph ] second level morph > ...+
Case 2: Get a morph, get morphing powers again, get another morph but must be within the time limits of the first level morph to not get stuck as a nothlit in the first level morph.