Kun Cao did not reply within the 48-72h window. The only bounded action for the no-reply branch is stand-down.
No further outbound messages sent. The single permitted follow-up is reserved for the 7-12 day checkpoint (item 4).
Message was delivered and confirmed
72h elapsed without response
No new evidence or contact-specific information warrants the follow-up yet
The 7-12 day window is the appropriate time for the single permitted follow-up
Last outbound: 2026-09-13
Last response: none
Next action: 7-12 day follow-up decision (item 4)
Response branch: no reply, stand-down, follow-up reserved for 7-12d.