Lead source tracking not working

My use case:

Site A - This is going to be tracked.
Site B - This site will have links to site A, when a user clicks that link, I should see a lead source tracking in my Infusionsoft application.

I have inserted the tracking code in the HTML of site A. I have inserted a link to site A inside site B’s HTML (just a link to site A’s home page), I am clicking the link, but I don’t see any new lead source tracking.

Can anybody please tell me what I am missing?

The tracking is working when I am submitting a webform (generated by Infusionsoft) inside site B, but I need the tracking via link clicks.