Flagging for spoilers in case.

In the first night of the peace talks after Harry has introduced Lara to Eitri we see him do a circuit of the room where he sees his old friend Vadderung/Odin/Beowulf/Santa Claus/One Eye (Daenerys Targaryen has less names almost) where and I quote:

“I traded a nod with him as I passed, and he mouthed the word “Later”.”

Was this just a casual “I’m busy right now if you want to chat, it’ll have to be later” or “I need to speak to you later” because we know he passes on the information about Mavra to him later on via Freydis. Was Vadderung about to pass on some important information that Dresden never checked in on and then it all went to hell, I know he was busy during the second night, what with his second heist in as many years, but why didn’t he speak to him during the first night (I mean he didn’t check in with a few people I thought he would, barely a word to Sarissa and Fix or even almost grown up Ivy to ask about Kincaid, but I felt sure Vadderung had something to say to Harry). I’m curious what he wanted to say to him and wondered if anyone else felt the same way.