Have you attempted to use the Visit Number dimension or the customer loyalty dimensions within segments?

Bounces would be the sum of visits for which 'visit_page_num' does not ever equal 2.For time spent per visit/visitor, did you try following the steps below, but only subtracting the first hit from the last hit within the visit? Then summing to get a per visitor aggregate on site level.Time spentHits...

This is not yet available.  Best bet at this point would be to upvote here:https://experienceleaguecommunities.adobe.com/t5/Adobe-Analytics-Ideas/Dynamic-date-comparison/idi-p/338269

It would be based on the ordering of your organizations logic within the 'marketing channel processing rules'.  Most organizations would have natural search before referrers before direct, but the placement depends on that ordering (as well as if a referrer was still available).

Do you need the segmentation to analyze the users or just to get the counts? If its the former you are in a tough spot because sub-hits are not yet available in segments.If its the latter and you have something like purchaseID in an eVar you can do a row count for rows where the revenue was higher t...

Currently when using the cumulative function, the data is evaluated and returned based on the 'as ordered by the dimension, using hash values for string based fields'.This returns intuitive results for continuous variables, like dates, and for many ordinal variables, like Time Spent  per Visit (Buck...

Not an answer, but have you tried request a day of data feeds to look at what parameter value is present when those va_closer_id or va_finder_id values are being set?

What metric are you using for your QA?  Anything aside from 'Marketing Channel Instances' might be problematic.

In addition to what was noted below its possible that the tracking code and marketing channels may have different expiration values.

I assume you are referring to within the Admin interface ,rather than within your app measurement code, is that correct?If so you may want to open a client care support ticket for guidance.  I can't remember how off the top of my head but there is a mechanism to acheive.  Might be something like usi...