I will try and provide as much information as I can and I apologize if I call something by an inappropriate name - but this is what I have done from my research.
We had a room that had a central light that was was able to be switched on/off at the two entry points to the room. I wanted to add four recessed lights to the room and just leverage the same switches, etc. However, when I went to connect all the wires the LEDs are very dim. I am able to remove the one switch from the circuit and the lights function to their full capacity with the one switch functioning properly. When wired to the other switch (removing the first from the circuit) the lights and dim and the switch that is connected does not work. I have attached some crude drawings in an attempt to show the wiring better as I am not sure how clear my words are. Let me know if I can help to clarify any details.