"Glad you're happy!"!Anon here, hahaha, from the animal-petting Haytham + Connor pre-slash/gen fill... while this isn't a fill of this prompt, I actually came up with some paragraphs that were inspired by this prompt, as per some of the 'headcanon' comments below. If you don't mind, then here's the link (admittedly I came up with my own criticisms of it after posting):
Re: Haytham/Connor - Listening to Eagles
http://asscreedkinkmeme.dreamwidth.org/2158.html?thread=11903086#cmt11903086