Isn’t this just about preferring (a) multiple smaller chunks to a single larger chunk, and (b) smaller chunks to be linearised before larger chunks, given the chunks have equal fee rates?
Is it possible to have two chunkings “A,B,C” and “D,E,F” where all have the same feerate, A is smaller than D, and DE is smaller than AB, and there is no alternative chunking “G,H,I” where G is smaller or equal to A and GH is smaller or equal to DE?