Can someone please explain how this differs from when we would have used Relaxed? Thank you!

#[test]
fn test() {
    use std::sync::atomic::AtomicUsize;
    use std::sync::atomic::Ordering::{Release, Acquire};

    let x: &'static _ = Box::leak(Box::new(AtomicUsize::new(0)));
    let y: &'static _ = Box::leak(Box::new(AtomicUsize::new(0)));

    let h1 = std::thread::spawn(|| {
        let r1 = y.load(Acquire);
        x.store(r1, Release);
        r1
    });

    let h2 = std::thread::spawn(|| {
        let r2 = x.load(Acquire);
        y.store(42, Release);
        r2
    });

    let r1 = h1.join().unwrap();
    let r2 = h2.join().unwrap();

    println!("r1: {} r2: {}", r1, r2);
}

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