Doc Limit TransactionBatch

[fredericmarois76]

Hello, in the documentation it 's indicated that:
....... the size of the TransactionalBatch payload cosmodb cannot exceed 2MB, and the maximum execution time is 5 seconds.
I would like to know how interprete this limit concerning execution time.

I launched transactional batchs witch have times of execution 12 seconds and it is works fine. (total size payload < 2 MB).
Does it mean that i have no garanties the transaction batch is consistent (because the times execution is greater than the limit of 5 seconds?). If it's not the case, how to consider this limitation of 5 second time execution.

Best regards