I'm afraid there is no definitive answer to this question. Apart from a few procedural points, such as the casting vote, the statutes do not prescribe the powers and duties of the chair. Moreover, the chair cannot be removed by the council until the end of the year of office.
Based on judicial decisions, one part of the chair's responsibilities is to confine discussion within the scope of the meeting and reasonable limits to time. But what counts as reasonable is obviously open to interpretation. Those present are entitled to seek to influence the progress of business, but there are no hard and fast rules.
The upshot is that you can certainly raise concerns and encourage other councillors to do the same, it may help, but you will not be able to force the issue until the end of the year of office, when you can elect a different chair.
If questions remain unanswered, you might want to rely on the fact that you have the right to request the clerk to create an agenda item. You can use that to force discussion of specific concerns. Provided the proposed item is clear and not unlawful, there are no grounds for refusing such a request.