Yep. Dependency: a task that needs to be finished before the current one. A dependent task is always lower priority than its required task.

Dependency and priority are both levers to be able to choose the right task to do (perhaps adding an importance level?)

A task that depends on unfinished ones cannot be proposed by the system. Between two possible tasks, the priority one will be presented first (or perhaps a computation with priority, importance and duration?)

Edit: bad autocorrect