Jak połączyć te dwa skrypty?

Jak połączyć te dwa skrypty?

var msg = "";
var rep = "Witam";

function Und() {
    var messages = document.querySelectorAll(".msg-body");
    var newest = messages[messages.length-1].innerHTML;
    if(newest == msg) {
        return;
    }
    msg = newest;
    if(msg.includes("cześć") | msg.includes("Cześć") | msg.includes("Witam") | msg.includes("hej") | msg.includes("elo")) {
    document.querySelector(".chat-input").value = rep;
    document.querySelector(".chatInputSend").click();
    }

}

setInterval(Und, 100);

var msg = "";
var rep = "ŻEGNAJ";

function Und() {
    var messages = document.querySelectorAll(".msg-body");
    var newest = messages[messages.length-1].innerHTML;
    if(newest == msg) {
        return;
    }
    msg = newest;
    if(msg.includes("SPADAM") | msg.includes("narazie") | msg.includes("trzymaj się") | msg.includes("papa") | msg.includes("pa")) {
    document.querySelector(".chat-input").value = rep;
    document.querySelector(".chatInputSend").click();
    }

}

setInterval(Und, 100);