Allow for session duration filtering in cohorts

[rcmarron]

Is your feature request related to a problem?

Users want to filter out users who visit a website and then quickly bounce.

See the Slack thread here.

Describe the solution you'd like

Allow users to build cohorts like "users who have ever had a session > 15 seconds"

Describe alternatives you've considered

Adding session duration filters to all insight types. (it ends up being way too complicated because it's multiple sequences of events, e.g. the session and the funnel)

Additional context

I haven't heard this from users, but I wonder if more 'session filtering' should be added to cohorts. For example:

• Users with > 5 sessions this month
• Users who performed an event 2 times in 2 separate sessions

Thank you for your feature request – we love each and every one!

[EDsCODE]

Makes sense to me. I think the challenge we need to account for here is an explosion of possible filtering options on top of the ones we already have

[rcmarron]

100% agree, if we only want to support the session duration use case, this could fit in nicely with event property filters (which I think we definitely want to add). Basically, we would expose session duration as a session property in taxonomic filter (like we do in trends) when users are creating criteria like "Performed X in the last Y days". It's a bit round-about, but I think it works.

[macobo]

From the sound of this, this isn't a cohorts issue but a filtering one. As such, related issue https://github.com/PostHog/posthog/issues/7963