BPMN - Waiting for an Event Once

Question

I am having a problem modeling one specific use case.

• Task 1 and task 2 are generated in parallel.
• Task 1 is repeated several times depending on the condition.
• As soon as the first task 1 is completed, we must wait until the completion of task 2 before continuing. This means that the first iteration of task 1 will wait (if task 2 has not yet been completed), but subsequent iterations will continue, since task 2 has already been completed.

Here is my simulation attempt:

The problems that I see with this model are:

1- If Task 2 is completed before the completion of the first Task 1, the Event will be thrown, but not caught. And once Task 1 is completed, he will wait for the event indefinitely.

2- 2+ 1 , .

, , , !

Answer 1

. . https://docs.camunda.org/manual/7.6/reference/bpmn20/events/conditional-events/

FYI: , JBPM. , .

Answer 2

-, . .

1 2 . 1 2, , 1s.