I'm not going to pretend to have any technical knowledge about what Shenzhen Green Rice Lianchuang Technology Co., Ltd did to make this work, but we can speculate about RF all day long, and I don't think it's much of anything to do with it. It's something to do with the way they have implemented Zigbee. When I pair Aqara or Mijia devices to the Aqara HomeKit Gateway, they DO NOT DROP. The guys that have the Mijia Gateways and MiConnector have the same experience.