I would like to express just how much I love the whole situation that's been set up at this point in the story. Just enough simultaneously moving parts to feel frantic but not so many that you lose track of them, enough information to understand what's happening but not so much that the author...
For clarification of any confusion, I am almost certain that this takes place nine years after the original attack by the colossal and armored titan (not nine years after the failure of that plan), therefore indicating a four-year time skip rather than a nine-year one.