Radio Commander has instantaneous communication with the units, it being over radio, and you’re only really interacting with your own units, sometimes you’ll operate near allied units in a mission and have to make sure your units properly identify contacts before engaging.

But the core mechanics are that you’re sending out requests for information to units and orders to move and engage, but you cannot see where they are on the map, you can put markers down on the map, but like that’s just you best guess of their postion based on what coordinates they gave you. The coms basically always work perfectly, although there are options that will make it so units can get lost or make mistakes in their reports back to you.