Hi Ying_Liu - I'm also looking to implement the same thing. Looks like it's been about a year since you set this up. Any increases in data that you're seeing? Also, did you add any additional sources since you created it? Thank you!

I completely agree. It's more of a directional metric than a definitive one. 

I'm trying to compare the time on site for two different websites. One is using GA4 and one is using Adobe Analytics. I'm seeing a dramatically different time on site in GA4 than Adobe. Does anyone know what are the differences in time on site in Adobe vs average engagement time in GA4?