I'll start off and then let Mr. Le Goff add any comments he wishes to make.
The figures you refer to appear in a section of our report where we noted that the Canada Revenue Agency was receiving information on which it could conduct more targeted investigations as the program advanced. The information received concerning GST and HST returns indicated there was an imbalance; at the very least, that information should have raised suspicions or doubts. However, the agency decided to use the information in its comprehensive post-payment audits instead of pausing subsidy payments to look into a potential problem.
I don't know whether Mr. Le Goff would like to add a few comments.