1K responded to a different email of mine today, so I decided to reply to the agent and ask if she could check on my email regarding the DEN catering. Her reply was something along the lines of "it's been sent to a specialty desk for review and has yet to be assigned to an agent". The cynic in me thinks that means it was put in a "DEN catering issue - DO NOT REPLY" inbox somewhere.
FWIW, the original email I wrote was on 1/16 and I even did a reply/follow up after that. Seems to be in line with what's mentioned above about not putting out any acknowledgement of the issue.