I had a boss who was very sensitive to the fact that most meetings have several agendas, that half of the team doesn't give a shit about a third of the agenda, and so if you let the wrong people start talking first, then the entire team sits there for an hour when they are only interested in 15 minutes out of that hour (often at the end). So you start with the things everyone cares about and work your way down the list.

The upside/downside to this is that you can't filibuster on something that matters to you but nobody else cares about, because they already left the room before you started. But of course neither can any of the other people who think their hill is as valuable as yours.