UICollectionViewDiffableDataSource + NSFetchedResultsController + privateQueueConcurrencyType

Is it OK to use UICollectionViewDiffableDataSource hooked with NSFetchedResultsControllerDelegate's method:

controller(_ controller: NSFetchedResultsController, didChangeContentWith snapshot: NSDiffableDataSourceSnapshot)

, using NSFetchedResultsController initialized with NSManagedObjectContext with NSManagedObjectContextConcurrencyType.privateQueueConcurrencyType?

It's seems everything works well, asking just for clarification.

Also does it make sense to use fetchBatchSize parameter of fetch request with this setup?

Thanks in advice.