Capturing & Storing Learners' Inputs

You can save their responses in the LMS using survey questions, getting the other users responses in is not as simple as Scorms are sandboxed so do not have access.

You will ideally store the responses in a database or Google sheet and then read them back in using javascript triggers, there are tutorials on here how to store in a google sheet and how to then retrieve those responses, that may help you down the direction you want.

If you are using Wordpress there is a plugin for Storyline called variable magic that will do this for you.