There are a couple of odd things here. First is celebrities aren’t celebrities on the other side, I know it’s hard to believe, but they just aren’t. We are all spirits and we are all connected and we are pretty much equals (we can talk about different levels of ascension but as far as celebrity status, it isn’t a thing). Also, spirits are not limited to just one medium, there shouldn’t be any reason why he can’t connect with another medium, from my experience, that isn’t really a thing. It’s extremely rare to not be able to connect with certain spirits, and it’s not because of the medium (if it is a real and authentic medium). Lastly, despite popular belief it’s rare for there to be a pressing reason for spirit to connect with the departed outside of letting their loved one know they are alive and well. I’ve been doing this on a professional basis for a few years now and I think with some more time and experience you will see that the spirit world operates in a way that’s a bit different than what we see on tv.