Yes, that’s what I’ve been trying to get at, many translations sometimes add or take away articles and aren’t consistently following the Greek text for capitalizing and it just adds to the difficulty when it comes to spirit and Spirit! I’m no Greek expert, and wish one who is could weigh in.
Here is a link to another couple relevant verses in the inter linear (look at the one linked and the next verse too:
https://biblehub.com/interlinear/1_corinthians/2-11.htm). These certainly suggest The Spirit is for knowing the things of God while the spirit knows the things of man. Recall Witness Lee wanted us to turn to the spirit all the time! When we did were we then getting the things of man rather than the things of God? My experience was yes!