three different teams on GW?

I've been arguing with some guildies about the fact that Anet has 2 or 3 teams on Guild Wars. 2 Teams on Chapters (1=Proph + NF, 2=Factions + Utopia). Isn't there a third team that does the events?

according to many posts/interviews/etc there are 2 (two) main chapter teams and a special event/whatever is needed team for three (3) teams

That said, each of those teams can and is probably broken up into several smaller teams which possibly cross the larger teams boundaries, such as a graphics team, skills team, etc.

There are 2 main teams. One works on the newest chapter to come while the other is either killing bugs in the most recent chapter or fixing things that need immediate attention. I am not sure if they have a dedicated special event team, but I do know that once a new chapter has been released, that team takes over debugging (after all they know the most about the new chapter) and the other team goes into full scale new chapter deveopment. If the new chapter every 6 month rule holds up we shhould see the current debugging team switch to full dev team around april when the next chapter is released.

Mega Mouse

I'm pretty sure that the development of a chapter takes 1 full years instead of only 6 months.

it has been posted numerous times by Gaile/Alex and in an interview with Jeff Strain that there is a third special event/swat/reaction team for things that come up

Everybody worked on the first chapter.

"Everybody" probably meant a smaller team.