Chaining a second MR816

I’ve got an MR816 CSX, and have a chance to get an MR 816 X. Question: do my monitor outs increase from 8 [from unit 1] to 16 [unit 2]? Also, I have 2 ADATs. Can I lightpipe from each ADAT into each MR unit? In other words, could I conceiveably get 32 inputs from 2 MR units and 2 ADATs lightpiped in?