title: BPMN Modelling: Parallel Processes, Dependency on Status of an Incomplete Process
body: <p>I am trying to model a process that splits into 2 parallel threads, where thread 1 progresses independently through milestones, while thread 2 needs to take into consideration its own progress + the status of thread 1 to progress through the milestones. At the end, both thread need to complete. How do I model it? (my best try below)</p>
  <p><img src="https://i.stack.imgur.com/Nll0Y.png" alt="Mockup" /></p>