This was never implemented generally in the AWX dispatcher, however, it does apply a timeout to its task manager.

Apparently, I had not once, but twice, created an AWX branch that implemented this generally

• ansible/awx@devel...AlanCoding:awx:general_timeout
• ansible/awx@devel...AlanCoding:awx:dispatcher_timeout

In both cases it's the same thing, which is to add timeout as a kwarg to the @task(timeout=5) decorator. This is, then, what is used for the task manager timing out.