Tradfri openhab without gateway

I try to switch my IKEA lamps with OH3. I do not have a gateway of Ikea, but from what I understand from the binding description, controlling the lights does not work anyway.

I can pair the switch (E1743) with zigbee2mqtt and the controller (ICPSHC24-30EU-IL-1) with zigbee2mqtt as described here, but not the controller with the switch and zigbee2mqtt at the same time.
Is it somehow possible to pair the controller also with the IKEA switch E1743 ? I did not manage to do so, but there might be a trick.

  • Platform information:
    • Hardware:
    • OS: ubuntu
    • Java Runtime Environment:
    • openHAB version: 3