Reminds me biking home one day. 2 people are on the trail going the same direction that I am in both wearing headphones.. I rang my bell and said behind you. Could they here me, nope, they were in deep conversation and I could clearly here the music on one of them. Still haven't figured out why they even needed headphones for when they are talking. The shoulder was grass so I just went that way and cleared them. I guess I spooked them and then they guy has the nerve to start yelling at me to tell them that I was behind them. I think I will get a air horn and save it incase I see them then, I will let them know when I'm behind them.