One time I happened to be standing in my doorway chatting to a friend when I got the call from FedEx/UPS to say they were (at that very moment) trying to get into my building but couldn't and didn't have the time to wait. While on the phone and very confused I happened to look around the street and saw the driver sitting in his van 20 meters away talking to me on his phone.

When I said this, he very sheepishly came over with my package.

otoh I'm guessing the poor guy probably didn't have time to piss while delivering > 1.5x the maximum possible number of deliverable packages in a normal working day.

And this was at least an improvement on getting the "we couldn't deliver your package because you were not home" email the day after you've waited in all day to receive it.