Insignia driveshaft help

[Joeyb01]

Hi all

a friend asked me to replace O/S/F driveshaft as joints gone and I’ve always gone by the thesis of replacing full shaft

ive not seen a driveshaft like these before that go into an intermediate shaft… the replacement I have is the part that goes into the intermediate shaft. I have tried everything from tapping with hammer / chisel, heating up, wd40 you name it I’ve tried to get that shaft off the intermediate but it won’t budge

i can’t even get the shaft out of the box! is there a way to replace shaft removing from intermediate that I’m missing?