Somethingsphishy UPS differences between UPS Next Day Air and UPS Next Day Air Saver

UPS Next Day Air Saver® https://www.ups.com/content/us/en/shipping/time/service/next_day_saver.html?WT.svl=SubNav

Choose this guaranteed next-day service when afternoon delivery meets your needs
Delivery Commitment Commercial Destinations:
Next business day delivery by 3:00 or 4:30 p.m. where UPS Next Day Air® delivery is committed by 10:30 a.m. or 12:00 noon, respectively

Residential Destinations:
Next business day delivery by end of day

UPS Next Day Air®
https://www.ups.com/content/us/en/shipping/time/service/next_day.html?WT.svl=SubNav
Delivery Commitment Next business day delivery by 10:30 a.m.,
12:00 noon, or end of day, depending on
destination