I don't think he'd actually know how, even if he somehow could—

[Cassian's scorn for Hux was clear—so was his protectiveness of Kay]

—but why don't I try to see how much more impossible I could make it for him to switch you off? High ranking officers could well have been given a trick for circumventing normal safeguards.

[He still doubted it. But not worth risking Kay to be overconfident]

I'm past overdue to give you some touch-ups anyway, if you want.