Multiple Spring @Scheduled tasks simultaneously

I'm trying to run multiple scheduled tasks at the same time on spring boot, but in practice they run queuing (one after the other, not parallel)

This is my simple service:

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

@Service
public class MyScheduleDemo {

    @Scheduled(fixedDelay = 5000, initialDelay = 1000)
    public void taskA() throws InterruptedException {
        System.out.println("[A] Starting new cycle of scheduled task");

        // Simulate an operation that took 5 seconds.
        long startTime = System.currentTimeMillis();
        while (System.currentTimeMillis() - startTime <= 5000);

        System.out.println("[A] Done the cycle of scheduled task");
    }

    @Scheduled(fixedDelay = 5000, initialDelay = 2000)
    public void taskB() throws InterruptedException {
        System.out.println("[B] Starting new cycle of scheduled task");

        System.out.println("[B] Done the cycle of scheduled task");
    }
}

Output:

[A] Starting new cycle of scheduled task
[A] Done the cycle of scheduled task
[B] Starting new cycle of scheduled task
[B] Done the cycle of scheduled task

But, It should be like:

[A] Starting new cycle of scheduled task
[B] Starting new cycle of scheduled task
[B] Done the cycle of scheduled task
[A] Done the cycle of scheduled task

What am I doing wrong?

This is my configuration:

@Configuration
@EnableAsync
@EnableScheduling
public class AsyncConfiguration implements AsyncConfigurer {

    @Override
    @Bean(name = "taskExecutor")
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(6);
        executor.setMaxPoolSize(50);
        executor.setQueueCapacity(100);
        executor.setThreadNamePrefix("customer-Executor-");
        executor.initialize();
        return executor;
    }
}