There is a set time for speeches. As I said, the rules for the Federation Chamber are really the same as the rules for the House. The speech time limits are the same as the speech time limits for similar sorts of presentations or similar sorts of business matters that operate in the House.
Question time only happens in the House of Representatives. There's no question period up in the Federation Chamber, but in the committee stages of a bill, for example, that might take the form of a question and answer format between a minister and other members.