Lost Connection, RTH Near Crash, Full Video, Downtown Houston, February 23, 2021

Mavic 2 Pro Zoom flown from Bayou Bend to downtown Houston to fly a Litchi Mission near downtown. The autopilot mission is planned at around 400ft altitudes but as it nears downtown the system issues an NFZ signal so I issue an RTH. The problem is there is the AIG building on the return path and it is 600ft tall plus it has a 100ft flagpole ...