It is no bearing that it is the same company. ACA and Medicare are totally different. Medicare sets the rules for the MA plans and not the ACA company. When a person turns 65, it resets everything. That's a fact!
Accidentally, I posted the Spanish version earlier. This is the English one: https://www.medicare.gov/sites/default/files/2018-07/10128-medicare-coverage-esrd.pdf
I'm not challenging anyone, I'm trying to clarify. This is the CMS publication and it seems clear the ESRD (except in limited circumstances) is a different ballgame. Please help me understand.