Yes, we support user tracking across forms and fields on one form are accessible in another. You can also dynamically set the options for a field via custom logic like this (uses example field IDs and assumes you ask the user to separate the entered names with a comma:
Thank you for this. What about if I have a file upload element in my form. Can I link it so that when you click to upload a file, the files which appear are ones which have been uploaded to a file upload element in a different form?