I was wondering if the Sonoff ZigBee dongle has the same chip inside like the SkyConnect stick, because HA sees 2 SkyConnect sticks in the hardware section? 
I first had 2 SkyConnect sticks connected, one for Matter and one for ZigBee. Now I replaced the ZigBee SkyConnect stick with a SONOFF Zigbee 3.0 USB Dongle TI CC2652P + CP2102N and it still shows 2 SkyConnect sticks.
