A 2am question about check-in time gets the same verified answer as one asked at 2pm. Anything that genuinely needs a person still goes to a person — honestly, not silently dropped.
Hosts can't stay awake for every guest message, and a generic after-hours autoresponder ("we'll get back to you in the morning") doesn't actually answer anything. A guest locked out at midnight needs a real answer now, not a promise of one later.
AnswerBnB does not provide human staffing. It does not claim a live, 24/7 staffed help desk of its own — escalations are handed to whoever the host's own team designates to receive them. What it does guarantee is that a question it can't confidently answer is never silently ignored or guessed at, at any hour.