not 兩部冷氣, may be he mean the venting system for the 2nd and 3rd row.
For RG, RG3 (2.4) is running with 7-speed +/- CVT while RG1 (2.0) is runing with 4-speed auto. But even 2.0 you can still use D3 mode as a kick down and please don't think that 7-speed is really a powerful or sporty function, I think it is more like a gimmick idea.