Workload view: sub-tasks all on the same row

Our team uses the ‘workload view’ on a daily basis to schedule tasks throughout the week. Typically, one task may have several sub-tasks that happen through the week. It would be great if sub-tasks related to the same task could appear in a single row, rather than across multiple rows. See example; ideally we’d have all of Task A on one row and all of Task B on a second row.

But how would that work in practice - what if multiple subtasks have the same due date?