Why couldn't Hashi and Madi talk after they died like Obito with Rin ?

[Ansatsuken]

The rule seems to be that if you are abnormally obsessed with someone, you can meet that person in the afterlife.

This rule is also why Naruto is able to communicate with Sasuke in the other plane.

But Madara obsessed with Hashirama 'wood'. How bout thatLol