A slight oversimplification, it'll either get pulled off the truck and take a spin around the center or be looked over by someone there, but yes that's totally

A slight oversimplification, it'll either get pulled off the truck and take a spin around the center or be looked over by someone there, but yes that's totally possible. Getting residential ground delivered "on schedule" isn't much of a priority (ground delivery guarantees are suspended for peak), although obviously that situation isn't ideal, particularly if it's more than a couple days. Basically what's happening is your local center can deliver X packages per day, with very hard limits imposed by DoT hour caps, and are dealing with X*N volume. If you need it faster, have it dropped at an access point (UPS Store) or have it held at the center.