Denver losing puts them at 37-20, so they fail to meet the 40-20 rule. For those who don't know the 40/20 rule is the idea that about 90% of eventual title winners will win 40 regular season games before they lose 20. Only OKC, CLE and BOS have hit the mark so far this season with MEM and NYK on the bubble (NYK plays BOS and MEM plays CLE, so both could be knocked out tomorrow).
The eventual NBA champ has won 40 before losing in 39 of the last 43 seasons. Only the 2021 Bucks, 2006 Heat, 2004 Pistons and 1995 Rockets defied the rule.
Its not a guarantee that you will win, because multiple teams will usually hit that mark in a season. But it is sort of a prerequisite.