When i newly hired on with Amercan feightways (now Fedex) I used to run the Anderson In. Route , there was (5) Delphi plants there ,plant #17 used to take trucks in the order they came. It was nothing for me to have 1 plt, & wait 2hrs to get it delivered, they had 4 dock guys working that dock...3 would play cards on the dock, the driver made the 4th, 1 guy would unload 1 trl...then they rotated , I used to think how inefficient that was & how did they stay in business that way...turns out they didnt...all those plants have been closed for many years now 😑