Ask what decided it and the split scoreline answers clearly. Hull City stayed patient through a goalless first half, then found the separation after the restart. For Millwall, the first 45 minutes offered a platform; the second half took it away. The away side did not need a wild finish to make the night count - just the decisive spell that moved the contest out of reach.
That is the summary in its simplest form, and it is a damaging result for the hosts because the final score leaves little room for excuses. Hull City leave with the clean sheet and the stronger mood, while Millwall are left to pick through a game that was there at the interval and gone by full time.
When supporters revisit the stats and highlights, the key detail will remain the same: a level first half, then a 0-2 second-half swing. In a long Championship campaign, not every night needs drama to matter. This one was decided by control, timing and the ability to turn a close match into a convincing away score.