Hi

I do not think OOTB these kind of Granular Breakup is Possible Like you Said

Assist Usage Breakup USER wise

Assist Usage with TASKS Records Details

I see few ways like -

Customization on those events like - Inc Summarization or Chat Summarization

Contact with Service Now with these use cases - May be they can provide you from some backend table or it can go as an idea for Future Releases.

** Please close the thread if you got the answers or Direction to Work in with . 🙂

Regards

RP