How to pronounce “overlapping”(noun) in English

and the orange Ginza Line overlapping, and at Ichigaya the yellow Yurakucho Line and the yellow Sobu Lineoverlapping, the same colors just keep overlapping without any problem. So, by changing the way I draw the subway, JR, and private railways, I made the JR lines stand out a little, andsomehow I tried to process that information. And then, I think what might confuse foreigners is that there are express trains and limited express trains and all sorts of other things, which is probably a troublesome