Hi,
I'm not 100% clear on your requirement but if seems you have a single pulse from a KNX switch, which you want to immediately trigger a single pulse to your gate controller, and then after a 10 second delay, you want to trigger another pulse to your gate controller. Is that correct?
If that's what you want, simply connect a 'delayed pulse' block to the KNX switch, with a delay time of 10s. You can trigger both this block and the 'immediate' pulse from the same KNX switch input.
Or have I misunderstood your requirement? I don't see what this has to do with the gate controller TBH.
Robin