I have a story from a client I worked with. They had 3 or 4 positions they needed filled for their team ranging from Jr to Sr level. But because they worked at a big company they couldn't do the recruiting directly, everything had to be through HR. While the problem was their assigned HR person was unresponsive and slow on the uptake and then took a huge vacation. So they just started looking at the applications that had been submitted through the portal and asking the division's secretary to reach out and start setting up appointments. Time to interview and make a decision on people went from literal months to 2-3 weeks.

Unfortunately this isn't a happy ending to the story. HR threw a hissy fit that they were being sidestepped (because they were completely incompetent ninnies.) And management had to come down on the manager who was doing it and tell him to follow the process.