Google Nest Community

What is the time interval between event alerts? I understand you don't want to bombard users with a ton of alerts but it would be nice to know the interval. 20 mins? 5 mins? I couldn't find this info online. Thanks in advance.

I'm trying to help someone set a Google indoor Nest Security Cam 1080p (Wired) - 2nd Generation. It set up easily and does everything (detects a person, records the event) but it does not give an audible alert on the cell phone. I've gone through all...