How Frederick and Seteth became Besties (Fire Emblem Heroes: A Day in the Life Comic Dub)

Hang on, didn't Frederick already have a similar conversation with Jakob?
Link to the original comic (I do not own the rights):
fire-emblem-he...
Music Links:
"But Frederick, it's nearly dark!" (Fire Emblem: Awakening): • "But, Frederick, it's ...
A Promise (Fire Emblem: Three Houses): • FE Three Houses OST - ...

[@Watapatapon]

Jakob: How dare you two get along... Without me?

[@perr0263]

Well, they already talked about it in a DLC

[@liarliarplants4hire]

Camilla: “ Don’t forget about me~”

[@joshuabergman3292]

Jakob: I see, so you do it all for your daughter?
Seteth: precisely, I must protect her at all costs
Frederick: well, as we understand, protecting family is important, but at one point you realize all that protecting doesn't help
Jakob: indeed, my son ended up lazy because I did everything for him
Frederick: although I don't have a "canon" child, the worlds where I am a father, I would end up being too strict sometimes, causing rebellion
Seteth: I think I do see where you're coming from, Flayn seems to be thinking about running away a few times, I should apologize
Jakob/Frederick: YES!