At the heart of the universe is One who cares about us and seeks to speak with us. The significance of Jesus for the Christian is that God's living word became a person. In Jesus God addresses us personally. An absurd life is one incapable of hearing. The absurd is what is meaningless.
Meaning exists only where people hear, where people make connections.
Meaning depends upon listening. Meaning requires paying attention. An absurd life is deaf to the music of the universe. An absurd life cannot hear itself addressed, and so it exists in isolation. I find that comforting.