It would be amazing to have a rehearsal mode where you can see the time spent on each slide.
Thanks for the update and quick reply. I'll be sure to keep an eye on this thread. Looking for the same issue. Bumped into your thread. Thanks for creating it. Looking forward for solution.
While we wait for this, maybe your phone has a stopwatch function? :) Then it would show "lap time". Depends on deck size and complexity though, of course, haha. But just a tip (I use that).