If you were to divide Planescape: Torment into chapters, when would each chapter start?

OlvynChuru

If Planescape: Torment had chapters like Baldur's Gate and Icewind Dale, how many chapters would there be and when would each one start and end?

While my idea involves six chapters, the number of chapters doesn't need to be the same as Baldur's Gate or Icewind Dale; after all, Planescape: Torment was trying to be as different as possible from the other games.

Here is my idea (spoiler warning):

Prologue: From start of game until the Nameless One leaves the mortuary.
Chapter 1: Begins when the Nameless One leaves the mortuary and enters the Hive; ends when the Nameless One finds Pharod.
Chapter 2: Begins when the Nameless One finds Pharod and accepts the quest to find the bronze sphere; ends when the Nameless One learns about Ravel from Lothar.
Chapter 3: Begins when the Nameless One learns about Ravel and begins the quest to find Ravel's Maze; ends when the Nameless One leaves Ravel's Maze.
Chapter 4: Begins when the Nameless One enters Curst in search of Trias; ends when the Nameless One leaves Curst.
Chapter 5: Begins when the Nameless One leaves Curst in search of Fhjull; ends when the Nameless One enters the Fortress of Regrets.
Chapter 6: Begins when the Nameless One enters the Fortress of Regrets; ends when the game ends.