Why totals.hit is larger than 1 while totals.timeOnSite is null in bigquery?

Question

I want to calculate the average time spent originating from email promotion. I have found a lot of sessions starting from the email have multiple hits totals.hits > 1 while the totals.timeOnSite is null. I am wondering if I have some misunderstanding here.

Answer 1

Have you checked if that hits are non-interaction? If an event is non-interaction type, it will not be considered in the calculation of the time on site and other metrics like bounce rate.