A few years ago I was "between roles" and applied for a developer position at Roku. For a short time they seemed moderately interested, and I exchanged a few emails with a senior in-house recruiter. And then they went completely quiet - no response to my follow-up emails. So I just put it behine me and got on with looking for a job.

Just over a year later I received an email from another in-house recruiter at Roku, thanking me for my application but regretting that they wouldn't be going forward with it (or some such corporate-speak). Which was kind of surprising.

I did a few searches and discovered that the date they went quiet roughly coincided with a sizeable round of redundancies. I also looked up the new recruiter and found that they were new to the company and quite junior. So, presumably, their first task had been to clear-up the backlog. That year was by far the longest I've ever waited for a response to a job application.