Door is shut, of course, as soon as Lavi's inside though he remains leaning against it. It's like Kanda to begin without preamble and immediately the mood that he had tried to build falls down to the appropriate level. Which means that he falls into the carefully built Bookman mode of just listening, watching, recording.

And perhaps ask... Perhaps not.

So Alma was from a point before his own death, before everything had somehow happened that could have spawned something like the other. But not an Akuma as they knew it, perhaps, seeing as Kanda would have had to have been the one to die to get Alma's body. And he was older, he was different all together. Just like the kid Lavi had first met as Alma and now Kanda.

But at least they were human, not Noah or Akuma, just...different human. Perhaps similar to parasitic users, he didn't know. So Lavi just listened.