Adrian received the owl just after breakfast, reading it through whilst Stephen did more research and other annoyingly educational things. He didn't know why his husband couldn't take a break but he'd learned to entertain himself when Stephen abandoned him for more educational pursuits and letters were usually a welcome addition to any day when they weren't being delivered by a black raven.
Cass's letter intrigued him somewhat... Definitely enough to warrant a meeting. Calling Floot and asking him to bring a pen and parchment, he quickly jotted down a reply to Cass before returning it with the same owl.
Cass,
I hope you're feeling somewhat better as I heard about the battle and that you didn't come off all that well in it. Obviously you Aurors are getting rusty what with spending all your working hours lamenting your loss (i.e. me).