Rahab's Red Rope, page-20

Leaving aside the fact that the dead Moses is speaking with Jesus and the OT prophet Elijah is in conversation with the risen Lord
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No, let's not leave it aside. Lets see what the Scriptures teach. Following the transfiguration: ''Jesus commanded them: “Tell the vision to no one until the Son of man is raised up from the dead.” --- Matt 17:9

Should we regard those we see on Tele Vision as being alive when they have been dead for ages simply because we see and hear them talking?
If not, why accept as proof Moses and Elijah were alive because Jesus was able to provide a vision of them speaking with him?