whome: OF3

[fab10]

Day 6

An ultrasonic loop, with a brief 3 second skip at about ten minutes to the end due to a phone call. Suppose that’s the downside of using my phone. Perhaps I should turn on DnD for the run.

Yeah in the past this was always 1 of my issues since the hours we had to listen to back them were lots compared to OF3. So yes now I pop on DND for 2hours. After the 1hour loop is done and if you're awake turn it off. 

or as Kol said use Flight/Airplane mode.

DND or “sounds off” is better imo because 
1) It turns off all other sounds like alarms, reminders, etc.
2) If you wish, you can still see if somebody calls or messages you.