If you feel you need to chase that is fine. If you need to pass me that is also not a problem. But I still have a bit of a competitive nature and if I feel inclined I will give you something to try and chase. Yes I do feel it is somewhat impolite not to at least nod your head, lift a finger or show any sign that there is another biker present. In my area we are far and few. Maybe it's an age thing with manners. But if it was all about the chase I can only feel they were fine with the competition.