How were they able to get majority leader chuck schumer on board with this act?

This paper is on how the Inflation Reduction Act of 2022 demonstrates the give and take process of creating legislation in congress. Ideally, I would like for it to include what elements were left out from the original, bigger Build Back Better Act and what ended up being included in the Inflation Reduction Act of 2022. Why were these things left out? Was it to gain support and cooperation within the Senate? How were they able to get Majority Leader Chuck Schumer on board with this act? Basically how it illustrates the sausage making progress of creating legislation.