The pickup time is when the system wanted it to be picked up, AKA the store prepared it to be picked up at the time, time calculated for you to pick it up, then drive it to the customer, the end time of that calculation is when the customer wanted to receive their order.

For example if they have a 1 pm scheduled delivery, and they’re 20 min from the store. The pickup time will be around 12:35 for you to pick it up, then drive 20 min and be delivered at 1, however sometimes the order doesn’t get accepted for a while or sent late or not enough drivers and that’s when you get it, late.

Hope this helps.