I have not shifted from 2 hours to 20 minutes. I was pointing out that even during a busy morning I would only expect 20 minutes to be added to the overall proc

I have not shifted from 2 hours to 20 minutes. I was pointing out that even during a busy morning I would only expect 20 minutes to be added to the overall processing time. And since I already plan to arrive at the airport two hours before the time to take off, 20 minutes is nothing. In essence, the impact on productivity is little.