The shift managers are on IM, sending email escalations to the site managers for exceptions etc. Definitely at end of shift they do a summary for the handover and regular reporting to leadership. Maybe not slack but they do leave digital traces.

Workers in a well ran assembly line should not have to figure out anything.

I could search for “belt jam” in outlook decades ago. Why do you see it as a difficult technical task? The info is there, nobody has the time to organize it.