However, I just got an idea for Day 20 that I came up with only because of your "cut-off from 911" interpretation.
The clue says, "He made sure all forms of escape were closed off as he made his way to his victim for the night." By doing so, perhaps Mr. Orange is physically cutting his victim off from 911, i.e. his victim cannot run away to the police?
If you agree with this interpretation then we are done: we can establish a link between Mr. Orange and KF91 for EVERY day that Mr. Orange appears!
(In that case, we'll move on to jtan. And now, I will get my much-needed dinner...)