On my 2015 legacy, the furnace has vents throughout the coach, including the bedroom and bath. I just use the zone 1 furnace to heat the entire coach. I have en electric fireplace with infrared heater to supplement the heat if needed.
I have a 5th wheel camper with two zone heating and cooling and it is the same as other. For heating you just set zone 1 and that heats your camper. For cooling you can set zone 1 different from zone 2. My zone 2 is the bedroom so I leave it off a lot unless it is very hot. My camper is ducted through out the whole camper and the AC from zone 1 will cool zone 2 and vice versa. Hope this helps.
Freddie & Linda
2015 FR Sierra 330RLS & 2003 Dodge 2500 4X4 CD
TMPS for Camper & TV
Days Camping 2019 - 58
Days Camping 2020 - 24 (so far)