So before SLAs where a thing, I used Resolution Date - Created Date as the resolution time.
Now, since the Service Desk SLAs take on a +/- figure, would it be possible to take the SLA data and subtract it from the calculated resolution time?
This give us better data since the SLAs are paused/started on specific actions.
In formula form it would be something like
(Resolution Date - Created Date) - Time To Resolution = Easy to comprehend Resolution Time