What is the difference between all the handl params?

[handl_original_ref] - original referral - first touch!
[handl_landing_page] - landing page - first touch!
[handl_ref] - last touch referral
[handl_url] - last touch url

Let's say you have a link to your website from google.com to domain.com/page1 And user click from Google, he/she lands on page1 and after that they go to page2 to convert

So it is like Google -> Page1 -> Page2 (Conversion)

The params will populate the following data:

handl_original_ref = Google.com handl_landing_page = domain.com/page1

handl_ref = domain.com/page1 handl_url = domain.com/page2