Gantt chart works to visualize current schedule of tasks (one update) not to measure the trend of the completion of those tasks over multiple update periods. See image I posted originally for example.
agreed... I find myself using the summary bar to do the real comparison against plan (metric) and formatting with RAG colors to designate if on track/ need improvement/ major issue. Both the formatting is complicated and especially on mobile devices the html coding doesn't work.
this is part of a larger concat beast mode for use as a header so the formatting options do not apply.