Our Chinese does the opposite - without fail it's 20mins, and everytime it's already sitting in the hot box. I once left immediately to collect and only then did I have to wait. And not long.
china city by big Q? i still remember as a kid always sitting in my mums car parked outside in the freezing cold for fucking ages because they always cooked the food after we showed up.
Ordering a take away for collection, being told it will be 20 minutes, heading down after 20 minutes and waiting another 30 for you food