Please explain how does @Async annotation works with @Scheduled tasks. For example, i have class:

@Configuration
@EnableScheduling
@ConditionalOnProperty(name = "scheduler.enabled", matchIfMissing = true)
@RequiredArgsConstructor
@EnableAsync
public class Scheduler {
    private final ReportService reportService;

    @Scheduled(cron = "${scheduler.create-reports.cron}")
    @Async
    public void createDailyReports() {
        // TODO: Make request to team-service to find all students id's. Then create new empty reports
        List<Long> studentIdList = new ArrayList<>();
        reportService.createEmptyDailyReports(studentIdList);
    }
}

Is it necessary to annotate inner reportService.createEmptyDailyReports method with @Async to process whole createDailyReports() in async or @Async on createDailyReports() is enough?

In my mind one @Async is enough. Thanks for explanation