Multiple Related Entries and Low Events

I'm trying to loop over Multiple Related Entries within a Low Events entry tag and it's not working. However, when I use the Single Related Entry tag it does give me the first related entry. I have no idea why the Multiple Related Entries tag doesn't output anything. See my code below - I get the event title but no speakers.

(Low, you've helped me with a different issue on this same site a couple weeks ago. The same super admin and FTP creds should work, or I can resend them if needed. see template site/test2)

search:event_type="EEA Meeting"
date="-1 week;now"

title: {title}
barrel speakers:

{event_barrel_speaker:title} <!-- THIS WORKS -->

{event_barrel_speaker:title} <!-- THIS DOESN'T WORK -->

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