622 arrived separately, but no communication from Dish
I got installed this past Saturday, and the 622 arrived via UPS three days early, on Wednesday. I ordered new service directly from Dish (I had been a Voom customer, but did not switch to Dish until the DVR became available).
Dish did not tell me when I ordered service that they would be shipping the 622. I just assumed the installer would bring it, so I was suprised (but not in a bad way!) when the package showed up a few days early. Dish also did not call me to confirm the installation, which had been set up almost a month in advance - I called Dish the day before to make sure it was still on. And I never heard from the contractor they used to do the installation until Saturday morning, when he called to let me know that he was at the previous job and would be on his way to my place soon.
So, yes, Dish seems to ship these things separately by UPS, but I wouldn't expect much from Dish in the way of communications about it. But it all worked out fine for me, and I'm happy as can be with the 622.