Mixing parallel and sequential promises

jquery-mixing-sequential-and-parallel-promises.js

var p1 = $.get('https://google.com/').then(function(){
    console.log('p1a done');
    return $.get('https://google.com/').done(function(){
        console.log('p1b done');
    });
}).done(function(){
    console.log('p1 done');  
});
 
var p2 =  $.get('https://google.com/').done(
    function(){console.log('p2 done');}
);
 
$.when(p1,p2).done(function(){
    console.log('all done');    
});
 
console.log('start');