Are they waiting 72 hours at each destination before moving it on ?
That’s my experience. The shipper will show they shipped it and then it takes 5 days just to show up in the tracking. Then 5 more days to get 20 miles to the next city. Then it showed up in Oxford, MS where it sat for 4 days to get to Memphis 50 miles away.
After it got to Memphis it took 5 more days to get delivered.