Did anyone else change their voice without having to consciously voice train? (Not testosterone obviously)

So, I've been living as myself for more than a year now, and have finished most of my treatments. I notice, that at no point in my transition did I commit to a training schedule. I didn't do that much study, I didn't even learn the proper terminology. However, I suppose subconsciously at some point in my transition I was actively feminizing my voice. My voice is so much more androgynous than it was before, and I can genuinely pass for anything depending on context when I hide my facial hair. My voice is a great factor in that. How did I do this without thinking about it, and has this happened to anyone else?