Don't want to pay for those browser extensions that help you add more connections on LinkedIn? Use this snippet while you are on the "search/results/people/" page and filters are applied to get "People" who are "2nd" or "3rd+" connections. Feel free to optimize it or add more functionalities.

automateRequests.js

function clickSend(x,i) {
  var y = document.getElementsByClassName('artdeco-button--3 ml1');
  if(y.length > 0) {
    y[0].click();  
    console.log("Request sent for index: "+ i)
    setTimeout(function(){ 
        clickConnect(x,i+1);
    }, 1000);
  } else {
    console.log("Button not found for index: " + i)
    setTimeout(function(){ 
        clickConnect(x,i+1);
    }, 1000);
  }
  setTimeout
}
function clickConnect(x,i) {
  if(x.length > i) {
    x[i].click();
    console.log("Process started for index: " + i)
    setTimeout(function(){ 
        clickSend(x,i);
    }, 1000);
  } else {
    console.log("End of page")
    var z = document.getElementById('ember2234');
    //You should inspect the element and check the ID for Next button
    z.click();
    setTimeout(function(){ 
        sendRequests()
    }, 3000);
  }
}
function sendRequests() {
  var x = document.getElementsByClassName('search-result__action-button');
  console.log("Number of connect buttons found on page: " + x.length)
  var i = 0
  clickConnect(x,i);
}
sendRequests();