User blog comment:Xilinoc/Ch. 585 - The Headless Star 4/@comment-26420452-20140618101046/@comment-11506376-20140618160800

To clear the air about the 72hours thingy, firstly rukia, renji and byakuya came thru before ichigo who came last. Am sure after the arrival of the first three shinigamis,the barrier must have closed up only ichigo to freshly re-open the barriers. Ichigocuoldnt have spent up to an hour, much more 70minutes.