Is it normal to look at people's mouths when they talk?
Yep.Totally normal
Yes, it’s normal to look at someone’s mouth while they talk. You might do it to follow their words, focus better, or simply because steady eye contact feels awkward.
Lots of people shift their gaze between someone’s eyes and mouth during a conversation. Watching a person’s mouth can help you follow what they’re saying, and some people find it easier or less intense than holding eye contact.