Just as a side node here… it also seems to be possible to use the 40 ME Monitor ports on a DSnake connection as separate outputs from the SQ if the receiving port is an SLink port. However, this is not officially supported and there is no guarantee for it to work. See SQ to AHM via AR2412 Monitor Port - #5 by docdocdocdoc
So, you’ve got 20 Outputs via DSnake, + 40 other Outputs via DSnake officially not supported, + 14 XLR sockets local on the console + 2 jack outputs local on the console.
As others have stated, the routing in the SQ mix engine is completely free and up to you. Of course, a decent default would be to route it 1:1 from the console’s mixing buses in order to avoid confusion.