Mr. Chairman, I have had the privilege of chairing this committee. I'm quite familiar with the Standing Orders as well.
Mr. Lemieux is engaging in a systematic obstruction, but he must do so in accordance with certain rules, including that of non-repetitiveness. He has to be quite good in order to waste everyone's time, but without repeating himself too much, which is not currently the case.
So you should cut him off and tell him that, if he wishes to continue this systematic obstruction and thus to continue wasting everyone's time, he should repeat himself a little less.