Delay time between the final core-collapse and the end of each mass loss event in a PPI pulse. Typical delays are on the order of few months, but they increase steeply with the initial He core mass of the PPI progenitor, which produce fewer but more energetic pulses, up to 10⁴ years. The top inset magnifies the range of half a year delays on a days scale. The first pulse is shown as a blue dot, and the second and third, if occurring, are shown as a purple plus and red cross, respectively, with a thin blue line connecting the pulses of the same model.