[quote=@The Nexerus]
How did you get on a plane if you were only wearing a cardigan? How did you even get to the airport? Is public nudity not illegal where you're from?
[/quote]

I think you misunderstood his phrasing. It follows the same vein as "I arrived with Mike."

In other words, Azarthes, his dream, and his cardigan all hopped off the plane [i]together[/i], all three of them fully clothed. I hope this assuages your concerns, good chap.