title: Range of Times COUNTIF?
body: <p>I'm wondering whether it's possible to have two columns of start and end times and be able to do some kind of count if to count available time slots?</p>
  <p>Here is my test as an example:
  <a href="https://docs.google.com/spreadsheets/d/1fvCajUcmLMvTZLdKz20u5_GKGj1cYOmv1JrxAMP7VPg/edit?usp=drivesdk" rel="nofollow noreferrer">https://docs.google.com/spreadsheets/d/1fvCajUcmLMvTZLdKz20u5_GKGj1cYOmv1JrxAMP7VPg/edit?usp=drivesdk</a></p>
  <p>I want to be able to count all the times between the written times as well as the times written. Hopefully that makes sense... Any help would be appreciated.</p>
  <p>Thanks,
  Mitchell</p>