I have a couple of 622's. IIRC you can set TV2 to be controlled by IR. If so you'd be controlling TV1 by IR and also TV2 by IR - each on a different IR address.
You will tell the Harmony software that you have two 622's - I would advise you to rename them TV1 and TV2.
During setup, the Harmony will determine which addresses you have assigned to each of the 622's by asking you to push specific buttons on the OEM remotes.
I have a couple of 622's. IIRC you can set TV2 to be controlled by IR. If so you'd be controlling TV1 by IR and also TV2 by IR - each on a different IR address.
You will tell the Harmony software that you have two 622's - I would advise you to rename them TV1 and TV2.
During setup, the Harmony will determine which addresses you have assigned to each of the 622's by asking you to push specific buttons on the OEM remotes.