The Wolkenritter's introduction to Hayate. Namely, after the Book of Darkness summons its , Vita discovers that their new mistress has fainted.
And to top it off, after they take Hayate to the hospital, she and the Wolkenritter make up a quick excuse as to their situation; the Wolkenritter are Hayate's relatives who came from he faraway native country to celebrate her birthday and came in costume to surprise her. Seeing Zafira's ears twitch gave off a couple more chuckles.
The re-entering Eyecatch in episode 6 was of Nanoha dreaming that she was eating steamed yam. And then we find out that she's just dreaming and the one she's "munching" on is Yunno (ferret form, of course).
Vita accuses the TSAB (and by extension Nanoha) of being extremely untrustworthy. Nanoha's response? "I'm not from the Administration Bureau. I'm just a citizen collaborator." Right. Because that sounds so much better.
The Movie 2nd A's commentary
How the Wolkenritter introduce themselves, particularly Zafira.
Lutecia lampshades how she and Arf sound so similar. Then she starts speaking like her, much to Zafira and Fate's surprise.
Though, it's more a Tear Jerker. The five children start to cry during the scene where Vita and Signum hunt Linker Cores from monsters, because of their reason to save Hayate. Then Agito asks Nanoha to do something, but Nanoha and Fate start crying, too, because they make the children cry with this movie.