Some AO questions.

[Lord Ben]

If someone leaves a square threatened by PC1 and goes to fight PC2 does only PC1 get an AO? He didn't leave any squares threatened by PC2 and I think leaving the square is what provokes an AO right?

Okay, lets say I have something capable of swallowing adventurers. I also have the spring attack feat. Could I overrun some PC's to get to the Cleric in back, swallow him, then keep going? Or is that not possible?

 

[Voadam]

PC2 will not get an AoO unless the someone does an action that provokes an AoO in an area that PC2 threatens.

Leaving a threatened area and moving more than 5' provokes an attack of opportunity as the someone leaves but before he enters the next area. Moving into a threatened area does not provoke an AoO.