Correct. The 42 day was a suggestion for the 75%
Post# of 148292
It, to my knowledge, was not suggested for the full trial. This lead me to believe it may have been due to the potential of halting the trial at 75% with s p value of less than .005.
We won't know until we see the data, but if we hit a p value of less than .01, It would confirm this theory. If we hit a p value right around .05 then it would appear the 42 day recommendation was to help the entire trial.