Can we add live chat/JavaScript to Reach 360?

We would like learners to be able to chat with us when learning in Reach 360. 
We use Intercom chat on our website/Help Center. 
We could add Intercom chat to our Reach 360 portal too with JavaScript, but I don't know if this is possible on Reach 360.

Based on this community post, "some community members have had some success in adding custom Javascript to the published output".

Thanks for any ideas!