How to communicate with dispatch during peak delivery hours when waiting for an order to avoid delaying the entire route

I picked up two orders during the lunch rush from the same commercial area but different restaurants. The first one was ready quickly, but for the second one, the system showed 'ready,' yet when I arrived, I found I had to wait another 18 minutes. If I waited, the quality of the first order would suffer, and the rest of my route would be completely messed up. At the time, I took a photo of the…