It depends on the years involved. There were some minor connector changes in the early 2000’s. However I swapped in heated, power leather from a Passat to my golf, 03-05 and the connections were all the same. My golf already had heated seats and the connectors just plugged right in. The air bag connections were the same so I was fortunate there. I did have to supply power to the seat motors and I did that by tapping into the cigarette lighter in the console.
I’ve not hooked up the memory part of the seat because I’m usually the only one who drives the vehicle. There is a swap write up either here on on VWVortex, I did some searching but failed to find it. With a Passat swap you would need to swap the metal seat frames, they won’t fit a golf/Jetta. Most MK4 front seats are interchangeable between a golf/Jetta the rear seats are slightly different between the two models.