It took me a while to get the set up, primarily because I have an old house and the voltage from the doorbell transformers was insufficient. This ended up being a much larger project than I thought because of that. However, I finally have them up and running. I may do a video review and post it here.The Apple TV should allow you to work with the lock using Siri, but it won't allow you to use the August app remotely.
However, you shouldn't need that Connect if you've got just the two locks and two doorbell cams. The cameras function as a Connect as well.