That is incorrect.

Co-Terminal is a very specific term used for fare construction only. Nothing more.

“Co-Terminal means specified cities which may be considered the same point for determination of journey type.” In other words, co-terminals are one or more relatively adjacent cities which for the purposes of fare construction are be considered the same point. e.g. BWI-WAS, FLL-MIA, OAK-SFO-SJC, LAX-ONT-BUR-LGB-SNA, NYC-EWR.