The Merge's ending slider for Dead Money says:
Spoiler
"The new voice did not think of the Courier again until the battle at the Divide reached his ears.
The battle between the two couriers, beneath the torn skies and the Old World flag... Each bearing a message for the other.
And the mutant prayed the Courier that had saved him... Had been saved in return."
Actually, this raises an interesting question as to how the Ulysses DLC will pan out.
Will it be required to play through the other DLC's first if we have them?
Will it take place after the main quest line in a new area?
Or will it be playable at any time despite the contradictions?
Why I ask is because of The Merge's slider.
Spoiler "The new voice did not think of the Courier again until the battle at the Divide reached his ears."
What happens if we do Ulysses DLC before Dead Moneys?
Since if we do this DLC "before" we save DoGod then it contradicts his ending slider.
Like, we do the DLC.
The battle happens.
We save DoGod.
Spoiler And then he hears about the battle at the Divide?
How does that make any sense?
The battle between Courier Six and Ulysses has already happened then.