AWS Batch Priority Queue

I've configuring AWS Batch in Fargate orchestration mode and I've two job definitions for distinct execution, what happen when I configure two queues for the same compute environment with the same priority, each of them for a job definition? Are execute in parallel if I submit these two jobs?

Scenario

Compute environment: COMP_ENV_1

Job Queue: QUEUE_1, compute environment: COMP_ENV_1, priority: 100
Job Queue: QUEUE_2, compute environment: COMP_ENV_1, priority: 100

Job Definition: JOB_DEF_1, job queue: QUEUE_1
Job Definition: JOB_DEF_2, job queue: QUEUE_2