How can I combine two encrypted models to inference?

[1Teng]

Hi~
When I followed the Tutorial7 to train an encrypted neural network, I found that both Alice and Bob trained different cnn models. Specially, the parameters in two cnn models are the arithmetic shares.
Now I finished training, and used the function crypten.save_from_party to save the models for Alice and Bob, and used the function crypten.load to load the models from the file. And now, I got two different models, but I don't know how to combine those two encrypted models to inference, and how to test them on the Alice and Bob's test sets.

Sorry, I'm a greenhand in PPML.