Tubes and pipes
Khan had never been the type to slack off. He could use the free afternoon to focus on his recovery, but Milia 222 made him restless. The dock offered so many opportunities that keeping his curiosity in check was simply impossible.
Maban had cleared one of Khan's main issues. The Nele knew Lower Level 3 way better than him, so he could leave Luke's mission to them. He would only get in the way if he started asking questions randomly anyway.
That left Khan with nothing official to do, which transformed into training time in his mind. Still, that field also offered many possibilities, and his priority was to get a general idea about all of them.
The Nele's arts were in line with what Khan had learnt from the Niqols. Their methods were different, but both species shared a deep understanding and reverence toward the mana.