I've noticed and interesting social shift in recent years: friends who get distracted mid-sentence by an Apple Watch notification, pause the conversation to check the alert, and then continue the conversation afterwards without realizing they had paused/were momentarily not present. It's fascinating because these people will not realize they were momentarily sidetracked, and remain convinced a watch keeps them more present than their hone.
There's a term waiting to be coined for this concept, but I'm not clever enough to come up with one...