Notify me of replies in my posts
And
Notify me of replies to my posts comments
So I think for an op one of those would be the correct one. I checked both "threads" and "threads comments" and got a notification, I just have to figure out which one means all replies and which one is direct replies because both "comments in my thread" and "replies to my threads comments" sound like they encompass both direct replies and sub replies (ie comments in my thread seems to imply any comment in the thread no matter how nested or to who they are to, at the same time "replies to threads comments" also sounds like it encompasses all replies since any comment under a thread no matter how nested or to who is technically a reply to a comment in the thread)...