If I understand it (and I have zero experience until this Tuesday night!!! LOL), the thermostat settings for both will simply tell that specific unit whether to come on or not.
However, they both feed air into the exact same ducts. The bedroom a/c is not an a/c that cools only the bedroom. If it were not very hot, I suppose you could run zone 2 only, and cool the whole trailer. Zone 1 also cools whole trailer. That's how I understand mine works.
And it's possible trailers are all different in that regard. And it's also possible I'm misunderstanding it.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS