The only condition is if the advice from the legislative clerk or from the table says that it somehow jeopardizes future considerations. I believe the Speaker will eventually have to rule on this. I know he is loath to direct committees. At some point or another, he will be setting precedent. He will either be sending a signal to parliamentarians that you can ruin, scuttle, legislation through delay and encouraging dissent and the fracture that he commented on, or he will have to set precedent saying, we want Parliament to work in good functioning order. Eventually this is going to land on his table and he's going to have to make a decision.
On April 14th, 2008. See this statement in context.