You start in the street and have to work your way up to the top floor of Bafford's Manor? Corridor! You start over ground and have to work your way down to the Quintus Tomb in the Bonehoard? Corridor!
Some were even almost identical to the typical Dishonored street level, eg The Haunted Cathedral (the first one, not Return to the Haunted Cathedral)
Here's a good example of the difference between Thief and Dishonored level design. The First City Bank mission can be speedrun in 4 minutes if you know exactly where to go, because all you need to do is to go to the basement, open the vault, get the recording and exit. Yet, a first time player will spend hours figuring the mission out, even on a low difficulty. Basically, apart from the loot requirements, you can skip a huge part of the level, if you've played it before.
This is something that's completely absent from Dishonored, because Dishonored devs seem to think, that having "open level design" means giving the player two corridors leading into the exact same place.