Why hasn’t Ye been in more Kid Cudi songs?

He has only been in two Kid Cudi songs and the recent one was on MOTM2 on Erase Me

He has only produced only 2 Cudi songs which were on MOTM1

He hasn’t been a feature or even a producer on any Cudi song since MOTM2

While Cudi has been on a bunch of Ye songs on albums like 808s, MBDTF, WTT, Yeezus, LoP, Ye, Donda and V2

And they also had a Collab album called KSG