Yes, we've recently started to track how much time developers are working on things that were estimated vs how much time they're spending on other things (stand

Yes, we've recently started to track how much time developers are working on things that were estimated vs how much time they're spending on other things (standups, retros, refinement, one to ones, company meetings, training, customer meetings, builds, support and maintenance....) A surprisingly large portion of the 'estimates being wrong' is actually down to the fact that people generally estimate that they're going to be working 100% without interruptions or other tasks. Sure, there are times when tasks are harder than expected, but this is a smaller factor than I had originally anticipated.