This part of the act was reported exactly from the National Defence Act that dealt with the office of the CSE commissioner, where 30 days was the limit, or “as practical” is the wording. For the most part, the intelligence commissioner will be looking at authorizations that are on an annual basis, so there's going to be a natural cycle. The concern with 24 hours is that you're giving a lot of information to that commissioner. You wouldn't want that commissioner to be rushed and to make decisions on an artificial timeline. Thirty days is seen as a better time to process that information.
On the dataset issue in particular, there is a provision in Bill C-59 to allow for decisions to be made more quickly, or “as feasible”.