<div id="diagram"></div>
<script>
$("#diagram").kendoDiagram({
    connections: [{
        from: { x: 100, y: 150 },
        to: { x: 300, y: 150 }
    }]
});

var diagram = $("#diagram").getKendoDiagram();
var connection = diagram.connections[0];

// Get current visibility
var isVisible = connection.visible();
console.log("Is visible:", isVisible);

// Hide the connection
connection.visible(false);

// Show the connection again
setTimeout(function() {
    connection.visible(true);
}, 2000);
</script>