Jon really didn't do anything wrong. He told the army to fall back when everything was on fire and buildings were falling. I don't think that'll be seen as betrayal.

He's obviously not down with what Dany did, but he'll need a good poker face in the immediate aftermath.

And as for Tyrion, doesn't that depend of if Dany knows he let his brother go? Did the Unsullied report it? Or maybe if someone finds Jaime's golden hand in the rubble?

Yeah, dude might wanna get on a boat or head north.
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"To Each His Reach"

but.....

Fuck aliens.