Desmond and Stephano's conversation took a much less serious turn as they drank and decided that more serious talks could be put off until more advisors were nearby. It would be irresponsible for the King to heed only the word of one duke when there were plenty of duchies, counties, and outskirts regions to consider when making decisions regarding battle.
However, after Desmond admitted he wasn't fond of the capital, a whole new topic of conversation opened. The more Stephano drank, the more irritable he became.
King Stephano knew that people were unfair towards the duke. While he lived in his palace for months to heal, Stephano punished staff who merely looked at Desmond the wrong way.
By the time Desmond left the palace, almost all of the staff had changed because Stephano refused to employ people who cared so much about someone's external appearance despite what he had done for their kingdom.