So I just watched Tin Man all the way through again last night (all in one go, so please excuse me if I'm a little loopy, I haven't slept since I woke up on Saturday) and then I made a timeline--because I'm a complete dork and I really like timelines.
Granted, there are probably more detailed/well-researched/accurate timelines out there--this just happens to be mine. I'm going both by what canon actually says about things and by appearance of the characters involved (Like with Az's age--she looks to be at least three years older than DG when they're kids, so that's how old I made her.) This is the timeline I'm using unless/until I can come up with something better. Feel free to adopt or discard this sequence at your leisure, hopefully it'll be helpful to somebody besides me.
ETA: fixed wonky greater-than/less-than signs and rearranged text a little for more clarity (I can dream, can't I?)