Can we calculate Talk Time, Hold Time and Ring Time from the Legs in the CallLog? Or do we really need the Telephony Sessions route?

I know there were some other threads about this but they over two years old by now. I was wondering if there is any simpler way to get:
Talk Time
Ring Time
and Hold Time
from the CallLog or any other endpoint that would keep our App as simple as possible. Adding Telephony Session would add complexity that I would like to avoid if possible.

The question may be: what can we really get from the Call Log Legs?

I'm referencing this document and past threads: https://docs.google.com/document/d/1jd1B4E5gC_5Vepm1wRo5MjvdyN7ll1zRbB9AFToz1Q4/edit?usp=sharing
https://community.ringcentral.com/questions/10367/is-it-possible-to-get-ring-time-from-the-call-log.html