To experience the TOTAL ending of craving, is to experience bhavanirodha and salayatananirodha. These two are not separate or distinct.
The arahanth continues to experience sense phenomena because his body continues to function. The very fact that this body/brain is hard wired to experience craving, aversion and delusion (see the brain spot/ neurological correlate for the 'Self' in the medial prefrontal cortex) goes to show the depth of avijja and how it gives rise to the bodily fabrication (as well as verbal and mental fabrications in the deepest sense). This body, as long as it continues to exist, continues to give rise to consciousness based on a previous avijja/craving/kamma/vinnana.
However there is no new avijja for the arahanth. Nothing will be/to be carried forward to a next life... and this is verifiable even now - in many senses the heart of the meaning of the word Dhamma in a Buddhist sense- verifiable now. When craving (even for becoming) ceases, EVERYTHING ceases.
There's no point of a path which promises the ending of suffering (with no excuses or caveats) and doesn't deliver it now but leaves it in some far future, in the next life.