With only 43 votes against, that is 1 Democrat voting against (Manchin for some reason I can't imagine) and 6 Republicans voting for it, we have a deficit of 5 Democrats just not voting. We also see the same deficit in the 26-69 against 60 more days of negotiations.
This situation does not lend itself to pat answers, including why Team Pelosi didn't first try a bill with both provisions combined. This trainwreck (sorry) could be seen coming for weeks, there was plenty of time to try to do the right thing. Except of course for both parties' establishments hating this segment of the population.
There have already been more than a year of (non)negotiations. Railroads are just waiting for the government to bail them out, more time wouldn't change a thing. They didn't try a combined bill because they can count, and knew it would just be a waste of time that would cause fear in the economy. There was no time for fucking around here