I wouldn’t read too much into the union saying which side they are on. It’s more negotiation and even if true, which I’m sure it is... its coordinated announcement before binding bids are complete needs scrutiny.
If you were the unions and you thought Cyrus were going to be successful you wouldn’t poke the Bain bear. Unless of course the unions actually don’t care, they want the best offer with the most jobs secured. 👍