You pay the Part B premium on “Advantage” plans...you just don’t usually pay the insurance company a premium. (Like you do for regular Medicare supplemental plans)(Like “Plan G” or “Plan N”.
https://www.medicare.gov/Pubs/pdf/12026-Understanding-Medicare-Advantage-Plans.pdf
Then why do they offer you the option of getting that money paid back to your SS if you get an Advantage plan?