UPS Freight has never really been “UPS” even though they sort of share the same computer systems and branding. Their quality of service has also always been much lower (at least in our region).
UPS Freight was an acquisition of Overnite Transportation several years ago. Not sure how much real integration between the companies ever happened beyond branding.
As someone who ships a decent amount of freight via UPS Freight (six time a year, at least), the integration is surface level at best. Yes you can go to the unified billing, but freight was it's own separate section. Yes you can get consolidated package/freight quotes but each had it's own website workflow. Yes you can generate a BOL on the ups.com website but it was way better to use the upsfreight.com website. The Freight API used the same ups.com API server and login, but it was it's own path with it's own xml schema.
It was pretty clear that the integration was, at best, surface level. Especially when the package reps and the freight reps had no clue what the other was doing, letting me know that it was just a siloed org.
At least when I was involved in shipping you could do both from a UPS account - but every company doing major shipments has more than one shipment supplier anyway.
