Right, sorry to dally on this, have been tres busy in RL
So, I'd have to say I'm not really sure about the difference in time it takes to get things organised and decided in anarchist meetings. My sense is that it is quicker but I think that is related to the way that the actual experience of anarchist meetings is they are not soul crushing exercises in putting up with the endless pontifications of some entitled fuckwit. I'm sure you know the type 
Because when someone is speaking during one, you are during that speech making an indication of your response to it, there are agreed signals that you use (a hand nod for consensus, for example) and if you need to respond to something directly, you have a special hand signal for that, and if you have a question, you have a hand signal for that, and if you have further information, etc etc. In this sense, the discussion becomes one in which you participate all the time.
This means you don't have to go back and vote on shit that's already clearly in consensus, and the person facilitating, which is quite a skill btw, is organising the responses for efficiency and clarity. It's pretty efficient, but it might also be that time doesn't feel like it's standing still while you are still remembering that you must respond to x point made ten minutes ago, and also you want to say something about this... etc etc. Then people proposing solutions will be like, so I'm going to write this blogpost and say x on it, anyone wanting to collaborate, and someone else will say, we still need to do something about the issue y raised, and someone will offer a solution, and others interested in that action will usually say they will join in that, etc. People form themselves into teams around actions and decisions those teams take are made transparent, with the idea that if you have something to say about a decision you'll go and work with the team in order to get whatever it is you are raising met.
You've got to remember that the whole ethos of such a space is that if you see something needs doing you just do it or you raise it to get it done. You don't have to have permission to join teams or groups doing specific actions and there is real care taken when a certain action is not fully supported by everyone that people are allowed to distance themselves from actions etc.
Do you know those threads on MN when someone needs to formulate a response to a toxic relation, or a difficult work situation etc, and like a million posters come in and work on it - they nearly always end in a really simple, clear and healthy response from the OP where she's untangled her shit and is really clear about what she is or is not saying? It's a bit like that, but quicker and less placemarky.