If waterfall and connection views had some visual indication of a closed connection then that would be very cool. (A bit like Fiddler’s timeline view.)
But it’s a decorative nice to have (rather than trawling through individual request details.)
It’s really not quite as useful as the waterfall view but the checklist view will have a red X in persistent connections if the connection is closed for a given request. One of the things that I’ve been lookin gat (and people have asked for) is the ability too add columns to the waterfall to display certain information (like an optional column for the mime type) - that would be a good way to show this but I’ll have to think about it a bit.