Parallell or not

Program.cs

async Task Hey(long timestamp)
{
    await Task.Delay(1000);
    Console.WriteLine($"Hey! Time elapsed: {(DateTime.UtcNow.Ticks - timestamp) / 10000}ms");
}

async Task Yo(long timestamp)
{
    await Task.Delay(1000);
    Console.WriteLine($"Yo! Time elapsed: {(DateTime.UtcNow.Ticks - timestamp) / 10000}ms");
}

async Task Main()
{
    Console.WriteLine("Without awaiting:");
    var now = DateTime.UtcNow.Ticks;
    var heyTask = Hey(now);
    var yoTask = Yo(now);

    await heyTask;
    await yoTask;
    
    Console.WriteLine("With awaiting:");
    var now2 = DateTime.UtcNow.Ticks;
    await Hey(now2);
    await Yo(now2);
}

Main();
Console.ReadKey(true);

Without awaiting:
Hey! Time elapsed: 1006ms
Yo! Time elapsed: 1006ms
With awaiting:
Hey! Time elapsed: 1001ms
Yo! Time elapsed: 2004ms