As a project manager, I have often encountered time losses caused by daily operational routines. Depending on how many departments are involved in development, these delays can range from two extra days per task to one or even two weeks for a relatively small feature.
These delays usually occur in processes not directly related to development itself: clarifying requirements, working in task trackers, searching for information, duplicating work, and constantly switching between tasks. This is also supported by research: around 90% of professionals say they regularly lose time because of inefficient processes and tools, and about half of them lose more than 10 hours every week because of this.