coupling multiple dependent seperate model

Dear all,

I have a generic question involving the best way to tackle a big simulation problem utilizing Comsol.
A question which I will formulate based on a simplified example:
Imagine I would want to simulate the thermo-mechanical behavior of a closet.
The closet is build up out of multiple doors where the thermo-mechnical behavior of the door is represented in one model (so totally different geometry and model size).
The closet also has 2 sidewalls which are physically connected to the doors and is also represented by a separate simulation model (also totally different geometry and model size).

Know that the closet model is coupled in two ways meaning that the door influence the closet, but the closet also influences the door behavior.

What would be best way to determine the behavior of the closet and set up the coupling between the different models also knowing that each door and sidewall will probably undergo different stresses?
Any help would be appreciated.

Greetings

Philippe