I went to the sleeper node that should unlock the option to combine the stems into override frequencies, but it still isn't letting me and I triple checked to make sure I didn't have any on me. I also got the 3/5 step when I went to talk with Ana. My boyfriend and I are doing this at the same time, and we've done practically the exact same things and he's progressing just fine. Edit: I'm stupid disregard if you're having the same problem you have to combine them in your inventory