If you are split connecting different size El Tape then yes because you will be laying then side to side. But the way I did my End of Line Club waitress dress, I have a bulk where the fold of my 90 degree angles are. That then created an overlay problem where my lines are not looking straight when the El Tape is lite up.
All I can do to fix the bulk folded part is use 3M clear tape, cuz it is damn strong, to press and hold the fold down in place then to fix the overlapped part some white electrical tape, or the white latex I used since my dress is white to cover the part of the El Tape that is causing the overlap lighted area problem.
I will have to take close photos of before and after to show you what I mean, I am sure this makes no sense unless you have done this and experienced yourself