I think we have but who knows where: Jaune also would be chatty before and after but not during, since that's focus time. In general he doesn't do a lot of bantering during training activities because he's taking it very seriously! (He's also shy around Dax but no one mention that or he'll perish.)

The bruises...of friendship. Jaune actually thinks of his that way. Being a pal means smacking the hell out of each other. I also feel like if he ever actually hurt Flynn too much though he switches to fussing and using his healing power on him IMMEDIATELY.