Skimming the first study, it was 9 people. Also, it doesn't "disprove" my argument at all. In these studies, the participants were likely sitting in a quiet room, and in the first study at least, half were taking notes and effectively quizzing each other! Of course it was just as effective for remembering. I remember things people tell me in person. It's literally how school works.
My post was specifically talking about how most people consume audiobooks in practice. They don't sit in a quiet room, taking notes, and quizzing each other. They're doing the dishes, driving, walking, working, reading, watching YouTube while also playing a game on their phone (yes really). Completely different scenario. How many times have you talked to someone distracted and at the end they're like "huh?" Now apply that to audiobooks. I'm sure if you sit in a quiet room and study via audiobook it's extremely effective, but again, most people don't do that.
There's probably even a study out there proving my point, that people don't listen and retain information properly when distracted, but I'm not going to go looking for it to win an internet argument. Either you get my point or you don't.
My man, that study only tested whether reading and listening are comparable for learning. Do you not see how that's basically irrelevant to my original comment?