Compare sub-lists of different lists

I have two lists. Let’s name them A & B. They both have two sublists.
I want to compare L1 of the 0 List from List A, to L2 of the 0 List from list B. In addition, L1 of the 1 List from list A to L2 of the 1 List from list B, so on and so forth… I’ve done my research and haven’t come across a way to do this. Any tips would be greatly appreciated.