It appeared that Kylo sensed something wrong with him during and after the battle? He maybe did some quick intel on that trooper upon their return?
I don’t get this either. Ren obviously senses something is off with this dude. Wouldn’t someone like Ren immediately place him in custody and have him interrogated?
Finn’s ability with a lightsaber also might be a massive hint about something. 😉
This is a spoiler-laden thread. You’re free to expound upon your theories 😃