What additional information can reveal how overdue a task was completed?

Adding the deadline mode to the expected completion column provides a clear visual representation of how overdue a task was completed. This method allows users to see the difference between the task's planned deadline and the actual completion time. By utilizing this information, project managers and team members can quickly assess the performance of specific tasks, understand delays, and identify patterns in productivity. This insight can be invaluable for improving future project planning and timelines.

In contrast, using a timeline chart primarily offers a visual overview of project schedules rather than explicitly indicating how overdue tasks were. Contacting the team for updates can yield subjective assessments of task completion but lacks the quantitative clarity provided by the deadline mode. Relying on external project management tools can introduce complexity and may not directly offer insights related to overdue tasks if those tools are not integrated properly with the team's workflow. Thus, the deadline mode directly addresses the inquiry about overdue task completion with precise, measurable data.