Cassian must carefully navigate the distrust inherent in being the new member of a secret operation.
So, Syril was observing the face of Andor many times, that’s how he memorised him so well. Andor, literally have never seen him again.
The name of the episode is for the phrase ‘The axe forgets, but the tree remembers.’ It’s a nice metaphor for this Syril-Andor relationship.
