Gravity Forms integration

What are the correct parameters to pass through from a gravity form to a mautic form,
What cookie values, session details, IP address etc so that we can correctly join a session to a contact when not using mautic native forms and using other form functionality such as Gravity

Secondary - is there a relationship between mautic click events and mautic mtc.js tracking?

If we have a session created via mautic email click through
What is the most elegant method of getting the contacts details so that we can personalise things / setup parameters and pre-populate Gravity form fields as a known relationship.

Application - repurchase via an ecommerce email campaign, or the ability to auto login based on them clicking a specific link from a mautic email.
Want to remove the barriers and friction points to the transaction

Lastly
Is there smarts in the plugin to merge sessions if a contact logs in with a known email address?

The issue names no files, tests, or entry points. First clarify which Gravity Forms parameters, Mautic session and contact behavior, and email-click relationship are required, then locate the plugin's corresponding integration points. Done should be a defined, testable scope for passing form data and handling known contacts or merged sessions.