Despite his transfer to the Bad Batch and all the time he's spent with Hunter and the others since Skako Minor, as Echo enters the quarters and hears the casual greeting, the instinct to salute is almost instinctual. Not just because he almost immediately recognizes the man as a Jedi, and inhibitor chip or not, some things were drilled deep into (former) Regs like Echo. No, Echo salutes because it's not just any Jedi on the couch, but because of who the man behind the rank is. So after a start, Echo's prosthetic arm comes up automatically.

"G-General Skywalker! Sir!" He snaps to attention with military precision. "It's good to see you alive and well, sir."