I mean, you’d just be making another hard retcon of TLJ then. Kylo says in that movie that the effort for Rey to talk to him like that would kill her. So the implication is that, no matter your strength in the Force at the moment, communicating across the galaxy will kill you. Unless you have a bond like the dyad. Or unless you instigate it between two people like Snoke does. I suppose you could make the argument that Luke could instigate it, but at that point the Force Skype memes literally write themselves. They’d all be on a Microsoft Teams call together LMAO.

Ultimately, this idea doesn’t work because it requires footage of Leia speaking on the other line to be completely seamless. The first Star Wars movie establishes that Force ghosts do not have to take a corporeal form in order to speak to people. Thus, it feels natural that Luke would do such a thing with Kylo. But with Leia, since she’s still alive, it would feel super awkward to not see what she’s up to as the conversation is unfolding. Imagine removing all visuals of Kylo speaking whenever he speaks with Rey in TLJ. It just doesn’t work.