A chart showing how long Cards took to complete (across one or more lists), optionally broken down by Member, Label or Custom field.
Instead of creating a Time to Complete chart for your entire process you can create a Time to Complete chart for individual lists to see how long each step of your process takes.
Probably not on the same Report, but if you have a report you are checking daily you might want to set a count or card list showing cards taking too long in a specific list. That way you can find cards before they show up in the Time to Complete chart as having taken too long overall. See the how-to on creating this [LINK TODO].
This is a typical Analytical chart you might check weekly/monthly/etc, check out other analytical charts
And check out our help doc on the difference between operational and analytical dashboards.