My 340RL does (see image). Is there no vent like that on yours? I seem to remember someone offer a service to add vents like this during a National Rally or perhaps one of the larger regional rallies.
Our 2024 310 RL certainly does. If your isn’t, and you have the outside vent the installers likely forgot to install the microwave internal baffle in the correct direction. Also you need to unsnap the flapper that is installed in the vent cover when you set up camp.