Why it's necessary call DispatchEventAsync in DomainEventsDispatcherNotificationHandlerDecorator

[makinsc]

Hello, first of all I want to thank you for the good work you have done with this repository, from which I am learning a lot.
Based on your example and as a learning method, I have made my own project. After getting everything working correctly, I notice that the "DispatchEventsAsync" method is called twice from two different points;
1.- When we do the Savechanges(): At this moment, when we do the _mediator.Publish(domainEvent) inside the DispatchEventsAsync() method
2.- Subsequently, the DomainEventsDispatcherNotificationHandlerDecorator is launched, which launches the DispatchEventsAsync() method again, processing it twice.
Is there any explanation for that?
Thank you very much in advance.