Gantt charts answer when
A Gantt chart is useful when sequencing, dates, and dependency management are reliable enough to plan. It shows the schedule shape of the work.
Hill charts answer what is known
A hill chart shows whether a scope is still being figured out or moving through execution. It is especially useful before dates can safely carry much meaning.
Combine deliberately
Use Hillchart’s timeline when timing needs a shared view, while retaining hill positions for the confidence conversation. Do not force uncertain work into false date commitments.