Timeline - Clarification on multiple AFK bars overlayed on top of eachother

- [x] I have searched the [issues](https://github.com/ActivityWatch/activitywatch/issues) of this repo and believe that this is not a duplicate.
- [x] I have searched the [documentation](https://docs.activitywatch.net/en/latest/) and believe that my question is not covered.

## Issue

Looking for clarification on what is going on with 2+ afk time bars overlayed on top of eachother as in the image below.
Is this normal?
I use activity watch to go back through my day and add working hours to a spreadsheet. So I use the timeline a lot to figure out my start/stop times as well as breaks. The multiple afk bars make it a bit confusing but I usually can eyeball it and have come to the conclusion that the longer time is usually the correct one (can you tell me if this is an accurate assumption?).

Summary:
A - How should I interpret this / what is going on in the background to create two afk times?
B - Does this make the time results inaccurate? (Is this an issue I need to worry about)