Oh, Al thought, and it was odd to feel his own dry huff of laughter and hear it echoed through Severus' ears, no louder than an exhaled breath, before a wave or unexpected warmth rolled over him and made his throat sting as it prompted an answering stir of emotion.
Eureka! That would be why.
And then Al held onto Severus' skinny shoulders for just awhile longer - another breath, in and out, with his forehead pressing against Severus' jaw - and then pulled back from his ever-reliable sanctuary.
"Saint Mungo's?" he mouthed his next plan of action, glancing down at the letter in Severus' hand.
He needed to be there, to see it in person. There was another memory to be made.