Dual Autotransformers for 2x stacked MultiPlus-II 120V

Hello, I’m wondering if it’s possible to feed L1 and L2 from shore/gen to 2x MultiPlus-II 120V (paralleled neutrals+grounds) and each of their outputs runs through separate autotransformers to increase continuous load balancing amperage from 28A (single AT) to 56A. Ultimately achieving 120/240VAC output.

Yes, that can be done.