I fake listening but not consciously - I don’t realise I’m doing it.
One time I was in a noisy pub with a group of
Dutch colleagues, and I laughed at a wisecrack one of them made in Dutch. It was very awkward because they were convinced I had been pretending not to speak it, and slipped up. And I was way too embarrassed to admit that I was on auto pilot. I didn’t fully understand myself at the time.
It doesn’t help having small dc talking constantly, one doing his autistic monologues. But even with adults I can predict about 80% of what people are going to say. Sometimes I struggle to tune in when I need to listen to directions or where we’re supposed to meet 
I find it really hard waiting for someone to finish saying something when I’ve already grasped their meaning. Dh finds my dsis irritating because he says that she never lets me finish a sentence and talks over me, (which he sees as disrespectful) but actually she has adhd too and when we talk I don’t have to finish because she gets it. I love talking with her because it’s fast, and interesting.
I try very hard to be a good listener/ conversationalist but sometimes I’ll open my mouth to segue and realise that I’ve hopped through too many links in my head and from their pov, I’m abruptly changing subject.
@Percie I do that - once in a very tense potential ambush situation in Africa, I fell asleep on dh’s shoulder.
I never noticed this before but tiredness/sleeping is a very consistent stress response.