Comments on your posts and threads in Messenger arrive in the same list as everything else, connected through Facebook Login for Business.
Repilay drafts from the documents you gave it, so an answer about shipping is your shipping policy rather than something plausible. Replies post as the Page, never from a personal account. You set the confidence bar, and every draft under it waits for someone on your team to release it.
Repilay answers customers in your name, so the line between the two is the same on every channel and worth reading once.
Channels connect through Facebook Login for Business, with the permissions shown to you before you grant them.
No scraping and no browser automation, so nothing here puts your Page or your account at risk.
GDPR-aligned handling, and a deletion request page anyone can use. Conversations belong to your workspace.