I get that people get bored with what people are sometimes talking at them. I get caught in that boredom myself in certain situations... some people are incredible long winded, presenting a monologue narrative of each moment of their day. I can understand, also, people phasing out when I start nerding hard, talking about complex science or something like that. That's when I just stop talking and realize why they drifted off - that totally makes sense.
What I'm mainly referring to is when I talk about the logistics of some thing or event, or something that needs to be completed, or something that isn't just day to day life "stuff". When someone's attention is so scattered, so fragmented, in the most severe cases. But I think this is all connected (isn't everything?...). The scattered attention, the constant checking of technology, the boredom... these are dull states of mind or subconscious escape mechanisms. When you constantly feel the need to check a phone when someone is talking to you because you are bored, you are trying to escape your current experience of reality instead of being with what is arising in it (that really boring thing that person is talking about).
But I'm someone who never gets bored. I'm completely fascinated by just about everything. I can't help myself. Even the rare chance I get bored with someone talking at me about how they were turning right at a red light, and they weren't paying much attention and wouldn't ya know it! I almost hit someone on a mountain bike! How about that! So then I turned right and drove down the road and saw this person from high schoo....... zzzzzzzzzzzzzzzzzzzzzzz
Then I think... well isn't that interesting? I got bored. Even that fascinates me.
"Seek truth in meditation, not moldy books. Look in the sky to find the moon, not in the pond."
- Persian proverb