Fwiw I have a short video of the mh guy talking the checkin desk switching stuff through with a piece of paper showing the times they were at the first set of desks (where i went and the boards showed) and then the second set (not far but I missed it).
I figured i might need a bit of proof that I'm not making this all up. Maybe it opens up help or compensation from an airline or insurance but my inner sense (and the lack of voices to the contrary) points at me needing to sort this out as if I no-showed.