I think post offices in large cities are very backed up and are days behind in their deliveries. Several posters have reported being told that by USPS personnel. I live in a city of about 90,000 with one post office, which apparently doesn't have that problem. They receive packages from UPS or their own distribution centers and they're delivered the next day.
The operation of Q distribution centers may be the mystery of the century since none of us really knows what's happening there. I'd love to visit and ask lots of questions. Even CS people don't know why shipping is so slow and with it's culture of secrecy, QVC is not telling anyone anything.
New Mexico☀️Land Of Enchantment